[swift] 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: Ie754caa8fa73b6204c66d19f2edfc251c27905db

deliverables/ocata/python-swiftclient.yaml

@@ -21,5 +21,9 @@ releases:
       - hash: 307d4c007afaccdcd70628d9fce44231115d62cd
         repo: openstack/python-swiftclient
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/python-swiftclient
+        hash: 4f280c6614ccb31d894c58c94ec23f56f5dbfa77
 repository-settings:
   openstack/python-swiftclient: {}

deliverables/ocata/swift.yaml

@@ -28,6 +28,10 @@ releases:
       - hash: 72ed8f23a78f11e1ca1688ba086590bb7062a8c7
         repo: openstack/swift
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/swift
+        hash: 53a6386791e3237e2a95db3a1a86a046b11e0664
 repository-settings:
   openstack/swift: {}
 # Retriggering ocata-em tagging