func AuthorizationServerURL() string {
	return authorizationServerURL
}
AuthorizationServerURL is the OAuth authorization server URL.
Q: Can this be gotten from the `azure.Environment` in `Environment()`?
package config
import (
	"bytes"
	"fmt"
	"github.com/Azure/go-autorest/autorest/azure"
	"github.com/marstr/randname"
)
var (
	clientID               string
	clientSecret           string
	tenantID               string
	subscriptionID         string
	locationDefault        string
	authorizationServerURL string
	cloudName              string = "AzurePublicCloud"
	useDeviceFlow          bool
	keepResources          bool
	groupName              string  
	baseGroupName          string
	userAgent              string
	environment            *azure.Environment
)
func ClientID() string {
	return clientID
}
func ClientSecret() string {
	return clientSecret
}
func TenantID() string {
	return tenantID
}
func SubscriptionID() string {
	return subscriptionID
}
func Location() string {
	return locationDefault
}
func DefaultLocation() string {
	return locationDefault
}