[barbican] 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: Ifeeb54d80f887400d4dde2f17d9b73289d524baa

deliverables/ocata/barbican.yaml

@@ -29,5 +29,9 @@ releases:
       - hash: d0ebc6c321a840c2d3c8ae5a682d721da7b4a239
         repo: openstack/barbican
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/barbican
+        hash: f5101f461a2e551d221ba4b678a67c5297549904
 repository-settings:
   openstack/barbican: {}

deliverables/ocata/python-barbicanclient.yaml

@@ -15,5 +15,9 @@ releases:
       - hash: 585e9c92922018345fa10a7ef93f9c09ae0413ec
         repo: openstack/python-barbicanclient
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/python-barbicanclient
+        hash: d2b54fa2523047da1f54a24ee16a801296c32e9f
 repository-settings:
   openstack/python-barbicanclient: {}