Fix cluster resource in cluster service

The 'parent' property has been masked out from service side for a long
time, exposing this to users is only causing confusing. This patch
removes the 'parent' property from the Cluster resource.

Change-Id: Icc69ff41a8cbebd664db138d7a0bc6430994d81f

openstack/cluster/v1/cluster.py

@@ -43,8 +43,6 @@ class Cluster(resource.Resource):
     project_id = resource.Body('project')
     #: The domain ID of the cluster owner.
     domain_id = resource.Body('domain')
-    #: The ID of the parent cluster (if any).
-    parent_id = resource.Body('parent')
     #: Timestamp of when the cluster was initialized.
     #: *Type: datetime object parsed from ISO 8601 formatted string*
     init_at = resource.Body('init_at')

openstack/tests/unit/cluster/v1/test_cluster.py

@@ -25,7 +25,6 @@ FAKE = {
     'max_size': 3,
     'min_size': 0,
     'name': FAKE_NAME,
-    'parent': None,
     'profile_id': 'myserver',
     'metadata': {},
     'timeout': None,
@@ -50,7 +49,6 @@ FAKE_CREATE_RESP = {
         'min_size': 0,
         'name': 'test_cluster',
         'nodes': [],
-        'parent': None,
         'policies': [],
         'profile_id': '560a8f9d-7596-4a32-85e8-03645fa7be13',
         'profile_name': 'myserver',