K8s/Folders: Add basic folder integration tests (create, read) (#93232)

* Add initial folder tests
* Add test for get/reading folders
* Compare legacy and k8s create and read
* Remove dependency on grafanaAPIServerWithExperimentalAPIs

pkg/apis/folder/v0alpha1/register.go

@@ -10,10 +10,11 @@ import (
 )
 
 const (
-	GROUP      = "folder.grafana.app"
-	VERSION    = "v0alpha1"
-	RESOURCE   = "folders"
-	APIVERSION = GROUP + "/" + VERSION
+	GROUP         = "folder.grafana.app"
+	VERSION       = "v0alpha1"
+	RESOURCE      = "folders"
+	APIVERSION    = GROUP + "/" + VERSION
+	RESOURCEGROUP = RESOURCE + "." + GROUP
 )
 
 var FolderResourceInfo = utils.NewResourceInfo(GROUP, VERSION,