[vitrage] 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: I7fd1ac229f7f55d609764ee7e31d9c2889aa3294

deliverables/ocata/python-vitrageclient.yaml

@@ -25,5 +25,9 @@ releases:
       - hash: 41beaa35c237b41a7b10a9e044322fd6483d08be
         repo: openstack/python-vitrageclient
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/python-vitrageclient
+        hash: e603bc6ffa4f117ad94f5a61013905e6a2fe92c6
 repository-settings:
   openstack/python-vitrageclient: {}

deliverables/ocata/vitrage-dashboard.yaml

@@ -20,6 +20,10 @@ releases:
       - hash: 9a66296af5dd9ac4c17337b5db20894bc5886bdf
         repo: openstack/vitrage-dashboard
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/vitrage-dashboard
+        hash: b68b79ee726607a755285fd51e703f71ee6fab2c
 repository-settings:
   openstack/vitrage-dashboard: {}
 # Retriggering ocata-em tagging

deliverables/ocata/vitrage.yaml

@@ -28,6 +28,10 @@ releases:
       - hash: 14eb7057df335dbbf8d5ae723b634bfdd12345e9
         repo: openstack/vitrage
     version: ocata-em
+  - version: ocata-eol
+    projects:
+      - repo: openstack/vitrage
+        hash: c6d1aebadfb6df3a74bdd5b0b8156e799bb54ba1
 repository-settings:
   openstack/vitrage: {}
 # Retriggering ocata-em tagging