[magnum] Transition Ocata to End of Life

This transition the Ocata branch to End of Life. The last patch of the
branch will be tagged with ocata-eol tag. The ocata branch cannot be
used anymore and will be deleted if this patch merges.

This is needed as stable/ocata is not actively maintained in the recent
period and thus gate is broken due to job failures. By removing these
branches, infra resources will be freed up, too.

Please try to identify any zuul job, that is defined outside of the
repositories in this patch (for example in openstack-zuul-jobs, etc.)
and won't be used anymore if stable/ocata is deleted, and propose a job
removal patch for them.

Please +1 if the team is ready for us to proceed with this transition,
or -1 if there are still some activity on the branch and the team wants
to continue to maintain it.

Change-Id: I77ce6400cfd28893ef9a05231db25dd13dfffc09

deliverables/ocata/magnum-ui.yaml

@@ -16,5 +16,9 @@ releases:
       - hash: 722a867ef0d5e1b7a0247ef5cf835e3398b36388
         repo: openstack/magnum-ui
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/magnum-ui
+        hash: c2ad56d2a76338c7df0432fce524fbd8892b776d
 repository-settings:
   openstack/magnum-ui: {}

deliverables/ocata/magnum.yaml

@@ -35,6 +35,10 @@ releases:
       - hash: a6d9f8950cfd91e5856a047061ac8057b7e257f3
         repo: openstack/magnum
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/magnum
+        hash: 69ed3bcaa44abd78b8ea1e87d98da667648edff6
 release-notes: https://docs.openstack.org/releasenotes/magnum/ocata.html
 repository-settings:
   openstack/magnum: {}

deliverables/ocata/python-magnumclient.yaml

@@ -20,5 +20,9 @@ releases:
       - hash: e6329a75f9536828c07fb2b65a30df20b18092ae
         repo: openstack/python-magnumclient
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/python-magnumclient
+        hash: bbebea9d3fb90267a8b51995b2a183c83b6cf8fb
 repository-settings:
   openstack/python-magnumclient: {}