[tacker] Transition Queens to End of Life

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

This is needed as stable/queens is not actively maintained in the recent
period and thus gates are mostly broken due to job failures. Besides,
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/queens 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: Icb21d224a14abcab8dab1a2ea941372c950709df

deliverables/queens/python-tackerclient.yaml

@@ -13,6 +13,10 @@ releases:
     projects:
       - repo: openstack/python-tackerclient
         hash: 8509a590aa3c2e60707c5427f5fde1e05878b8a8
+  - version: queens-eol
+    projects:
+      - repo: openstack/python-tackerclient
+        hash: d13eadfd1ceb5434264def0eb8a3bcaca152d3fe
 branches:
   - location: 0.11.0
     name: stable/queens

deliverables/queens/tacker-horizon.yaml

@@ -15,5 +15,9 @@ releases:
     projects:
       - repo: openstack/tacker-horizon
         hash: d61d76a0e7b788ef08ed9367a79d7f8aaa61c8f3
+  - version: queens-eol
+    projects:
+      - repo: openstack/tacker-horizon
+        hash: c34dde1d327c4f9af35ec989f3c677e50eede48f
 repository-settings:
   openstack/tacker-horizon: {}

deliverables/queens/tacker.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/tacker
         hash: 3b404d8dacbd60f2e4b15adae57f1d9142142912
+  - version: queens-eol
+    projects:
+      - repo: openstack/tacker
+        hash: 323c3481cc8b51b1131fd7cef02c65370a835f4e
 cycle-highlights:
   - Support containerised vnf support to Kubernetes VIM
   - Support vnffg updation