CI: Avoid generating a nova key in cephadm scenario

We use the cinder key for Nova by default, so a separate nova key is no
longer used.

Change-Id: I49ce6d36747e6c7d3a389d0afd2d034e8afdf8ed
(cherry picked from commit 6e18495)

Author: markgoddard

roles/cephadm/defaults/main.yml

@@ -26,4 +26,3 @@ cephadm_ceph_users:
   - client.glance mon 'profile rbd' osd 'profile rbd pool=images' mgr 'profile rbd pool=images' -o /var/run/ceph/ceph.client.glance.keyring
   - client.cinder mon 'profile rbd' osd 'profile rbd pool=volumes, profile rbd pool=vms, profile rbd-read-only pool=images' mgr 'profile rbd pool=volumes, profile rbd pool=vms' -o /var/run/ceph/ceph.client.cinder.keyring
   - client.cinder-backup mon 'profile rbd' osd 'profile rbd pool=backups' mgr 'profile rbd pool=backups' -o /var/run/ceph/ceph.client.cinder-backup.keyring
-  - client.nova mon 'profile rbd' osd 'profile rbd pool=volumes, profile rbd pool=vms, profile rbd-read-only pool=images' mgr 'profile rbd pool=volumes, profile rbd pool=vms' -o /var/run/ceph/ceph.client.nova.keyring

tests/run.yml

@@ -338,7 +338,6 @@
           - { name: "cinder/cinder-backup", keyring: "ceph.client.cinder.keyring" }
           - { name: "cinder/cinder-backup", keyring: "ceph.client.cinder-backup.keyring" }
           - { name: "glance", keyring: "ceph.client.glance.keyring" }
-          - { name: "nova", keyring: "ceph.client.nova.keyring" }
           - { name: "nova", keyring: "ceph.client.cinder.keyring" }
       when: scenario == "cephadm"