Create transient config provider, temp dir logic

Allows us to have a new config provider for each setup, with no overlap
of the directories used, and automatic cleanup of those directories.

config_app/config_endpoints/api/suconfig.py

@@ -110,20 +110,6 @@ class SuperUserRegistryStatus(ApiResource):
     def get(self):
         """ Returns the status of the registry. """
 
-        # If we have SETUP_COMPLETE, then we're ready to go!
-        if app.config.get('SETUP_COMPLETE', False):
-            return {
-                'provider_id': config_provider.provider_id,
-                'requires_restart': config_provider.requires_restart(app.config),
-                'status': 'ready'
-            }
-
-        # If there is no conf/stack volume, then report that status.
-        if not config_provider.volume_exists():
-            return {
-                'status': 'missing-config-dir'
-            }
-
         # If there is no config file, we need to setup the database.
         if not config_provider.config_exists():
             return {