Gradle buildNative is broken
**Describe the bug**
In a Gradle project, when you run `./gradle buildNative --stacktrace` the following  error appears:

```
Caused by: java.lang.RuntimeException: Failed to resolve initial application dependencies
        at io.quarkus.bootstrap.BootstrapAppModelFactory.createAppModelForJar(BootstrapAppModelFactory.java:429)
        at io.quarkus.bootstrap.BootstrapAppModelFactory.resolveAppModel(BootstrapAppModelFactory.java:240)
        at io.quarkus.bootstrap.app.QuarkusBootstrap.bootstrap(QuarkusBootstrap.java:134)
        at io.quarkus.gradle.tasks.QuarkusNative.buildNative(QuarkusNative.java:384)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:49)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:42)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:721)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:688)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$3.run(ExecuteActionsTaskExecuter.java:539)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:524)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:507)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$300(ExecuteActionsTaskExecuter.java:109)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.executeWithPreviousOutputFiles(ExecuteActionsTaskExecuter.java:258)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:247)
        at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$1(ExecuteStep.java:33)
        at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:33)
        at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)
        at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:63)
        at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:35)
        at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:49)
        at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:34)
        at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:43)
        at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)
        at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)
        at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:34)
        at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:44)
        at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:54)
        at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:38)
        at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:153)
        at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:67)
        at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:41)
        at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)
        at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:44)
        at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:33)
        at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)
        at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:92)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:85)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:55)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:39)
        at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:76)
        at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)
        at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:94)
        at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:49)
        at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:79)
        at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:53)
        at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:74)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:78)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:78)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:34)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:39)
        at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:40)
        at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:28)
        at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:174)
        ... 125 more
Caused by: java.io.IOException: Failed to located META-INF/maven/<groupId>/<artifactId>/pom.properties in /tmp/my-gradle/build/libs/my-gradle-1.0-SNAPSHOT.jar
        at io.quarkus.bootstrap.resolver.maven.workspace.ModelUtils.resolveAppArtifact(ModelUtils.java:114)
        at io.quarkus.bootstrap.BootstrapAppModelFactory.createAppModelForJar(BootstrapAppModelFactory.java:362)
        ... 190 more
```

**Expected behavior**
No error

**Actual behavior**
Errors


**To Reproduce**
Steps to reproduce the behavior:
1. 
```
mvn io.quarkus:quarkus-maven-plugin:999-SNAPSHOT:create \\
    -DprojectGroupId=org.acme \\
    -DprojectArtifactId=my-gradle \\
    -DclassName="org.acme.quickstart.GreetingResource" \\
    -Dpath="/hello" -DplatformVersion=999-SNAPSHOT -DbuildTool=gradle
```
2. `./gradlew buildNative --stacktrace`

**Environment (please complete the following information):**
 - Output of `uname -a` or `ver`: Fedora 31
 - Output of `java -version`:  Java 8
 - GraalVM version (if different from Java): 19.3.1
 - Quarkus version or git rev: 1.3.0.Alpha1

diff --git a/devtools/gradle/src/main/java/io/quarkus/gradle/tasks/QuarkusNative.java b/devtools/gradle/src/main/java/io/quarkus/gradle/tasks/QuarkusNative.java
index a64b05eed21..58bbd3c6c28 100644
--- a/devtools/gradle/src/main/java/io/quarkus/gradle/tasks/QuarkusNative.java
+++ b/devtools/gradle/src/main/java/io/quarkus/gradle/tasks/QuarkusNative.java
@@ -212,6 +212,7 @@ public boolean isEnableJni() {
     }
 
     /**
+     * @param enableJni true to enable JNI
      * @deprecated JNI is always enabled starting from GraalVM 19.3.1.
      */
     @Option(description = "Enable jni (deprecated)", option = "enable-jni")
@@ -379,8 +380,7 @@ public void buildNative() {
                 .setLocalProjectDiscovery(false)
                 .setBuildSystemProperties(realProperties)
                 .setIsolateDeployment(true)
-                //.setConfigDir(extension().outputConfigDirectory().toPath())
-                //.setTargetDirectory(extension().outputDirectory().toPath())
+                .setAppArtifact(appArtifact)
                 .build().bootstrap()) {
             appCreationContext.createAugmentor().createProductionApplication();
 
['devtools/gradle/src/main/java/io/quarkus/gradle/tasks/QuarkusNative.java']