CI: Add Ceph groups back to inventory

Following I21dd51c82534704f31ca8d3f72cb2587ee216cd9, the test inventory
was synced with the multinode inventory. This removed some temporary
ceph groups used by the ceph-ansible-upgrade jobs, and broke them. This
change adds the groups back.

Change-Id: I37379258447ffde6b083f4e8d9a1644bc17cd165

tests/templates/inventory.j2

@@ -187,6 +187,12 @@ control
 [solum:children]
 control
 
+{# TODO(mnasiadka): Remove in Victoria #}
+{% if scenario == 'ceph-ansible' and is_previous_release and previous_release == 'train' %}
+[ceph:children]
+control
+{% endif %}
+
 [ironic:children]
 control
 
@@ -344,6 +350,29 @@ neutron
 [ironic-neutron-agent:children]
 neutron
 
+
+{# TODO(mnasiadka): Remove in Victoria #}
+{% if scenario == 'ceph-ansible' and is_previous_release and previous_release == 'train' %}
+# Ceph
+[ceph-mds:children]
+ceph
+
+[ceph-mgr:children]
+ceph
+
+[ceph-nfs:children]
+ceph
+
+[ceph-mon:children]
+ceph
+
+[ceph-rgw:children]
+ceph
+
+[ceph-osd:children]
+storage
+{% endif %}
+
 # Cinder
 [cinder-api:children]
 cinder