[heat] 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: Ice2ec661b4b55f55fe536176ed17a44e71bf6c3a

deliverables/ocata/heat-agents.yaml

@@ -19,5 +19,9 @@ releases:
       - hash: 769d0de4d9acb07563202a2ef3d3a0aa1b9542d1
         repo: openstack/heat-agents
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/heat-agents
+        hash: 0ddc10eeba2ce4df8b9c64b438c8acad9de65191
 repository-settings:
   openstack/heat-agents: {}

deliverables/ocata/heat.yaml

@@ -65,5 +65,9 @@ releases:
       - hash: 21a4740a885184a95b37758d2b816443633db953
         repo: openstack/heat
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/heat
+        hash: a1ba867f07870450d40c93f31b79c8c9984c469a
 repository-settings:
   openstack/heat: {}

deliverables/ocata/python-heatclient.yaml

@@ -36,5 +36,9 @@ releases:
       - hash: 082f728d179dc2bba64e9821eaec18f429aa15fd
         repo: openstack/python-heatclient
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/python-heatclient
+        hash: 06396efa53c5a89c805a670f770aa3b5833f57e1
 repository-settings:
   openstack/python-heatclient: {}