Remove nova-cert environment information

nova-cert has been marked for deprecation and removal in Ocata.
Remove its inventory group and environment information.

Depends-On: Ia2e5fdfc995d3bf3790f23a0579ee8757d215851
Change-Id: I5a34ae266248d78c23a41bbe5dc32c6b4a64c460

playbooks/inventory/env.d/nova.yml

@@ -20,9 +20,6 @@ component_skel:
   nova_api_os_compute:
     belongs_to:
       - nova_all
-  nova_cert:
-    belongs_to:
-      - nova_all
   nova_compute:
     belongs_to:
       - nova_all
@@ -54,14 +51,6 @@ container_skel:
       - nova_api_os_compute
     properties:
       service_name: nova
-  nova_cert_container:
-    belongs_to:
-      - compute-infra_containers
-      - os-infra_containers
-    contains:
-      - nova_cert
-    properties:
-      service_name: nova
   nova_compute_container:
     belongs_to:
       - compute_containers

tests/test_inventory.py

@@ -273,8 +273,6 @@ class TestAnsibleInventoryFormatConstraints(unittest.TestCase):
         'nova_api_metadata_container',
         'nova_api_os_compute',
         'nova_api_os_compute_container',
-        'nova_cert',
-        'nova_cert_container',
         'nova_compute',
         'nova_compute_container',
         'nova_conductor',