Tree is not refreshed after I created a new project with the same name as the one I just deleted.

[adietish]

related to #632

Steps:

1. EXEC: have a current project/namespace that you can delete (one cannot delete "default")
2. EXEC: select "Delete Namespace" (or "Delete Project" if you are running against an OpenShift cluster)
3. ASSERT: namespace is deleted and the tree is refreshed. The child to the namespace now display
   Missing namespace, choose or create a different one
4. EXEC: select "New Namespace" in the ctx to the cluster node in the tree and use THE SAME NAME as the namespace that you deleted (everything is fine if you use a different name).

Result:
There's no change in the tree, the tree is NOT refreshed. Manually refreshing the cluster helps and the error is removed.

Expected result:
The tree should refresh and remove Missing namespace, choose or create a different one since the namespace now exists.