workspace validator stopped working
There is a regression in 5ca8f7324b94cf0ea85d4afb9234d1f4296e7e96 (ocrd v2.1.1): 

```
Traceback (most recent call last):
  File "ocrd", line 8, in <module>
    sys.exit(cli())
  File "click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "click/decorators.py", line 64, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
TypeError: validate_workspace() got an unexpected keyword argument 'page_textequiv_consistency'
```

Click expects `page_textequiv_consistency` instead of the old `page_strictness` variant, because it is the __longer__ form:

> If all names for a parameter contain dashes, the internal name is generated automatically by taking the longest argument and converting all dashes to underscores.


diff --git a/ocrd/ocrd/cli/workspace.py b/ocrd/ocrd/cli/workspace.py
index 514b8446..d23c2228 100644
--- a/ocrd/ocrd/cli/workspace.py
+++ b/ocrd/ocrd/cli/workspace.py
@@ -51,14 +51,14 @@ def workspace_cli(ctx, directory, mets_basename, backup):
 @click.option('--page-textequiv-consistency', '--page-strictness', help="How strict to check PAGE multi-level textequiv consistency", type=click.Choice(['strict', 'lax', 'fix', 'off']), default='strict')
 @click.option('--page-coordinate-consistency', help="How fierce to check PAGE multi-level coordinate consistency", type=click.Choice(['poly', 'baseline', 'both', 'off']), default='poly')
 @click.argument('mets_url')
-def validate_workspace(ctx, mets_url, download, skip, page_strictness, page_coordinate_consistency):
+def validate_workspace(ctx, mets_url, download, skip, page_textequiv_consistency, page_coordinate_consistency):
     report = WorkspaceValidator.validate(
         ctx.resolver,
         mets_url,
         src_dir=ctx.directory,
         skip=skip,
         download=download,
-        page_strictness=page_strictness,
+        page_strictness=page_textequiv_consistency,
         page_coordinate_consistency=page_coordinate_consistency
     )
     print(report.to_xml())
['ocrd/ocrd/cli/workspace.py']