[solum] 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: Ifdb7d2954b49cda1775ba69d6687fcb78bf3e5e8

deliverables/queens/python-solumclient.yaml

@@ -16,6 +16,10 @@ releases:
     projects:
       - repo: openstack/python-solumclient
         hash: ca6a55f31a804273cd7b676fd5773baf34299b50
+  - version: queens-eol
+    projects:
+      - repo: openstack/python-solumclient
+        hash: 07a58ddeccb8a65f33d429b0b1d8ccfb15f3ca7d
 branches:
   - name: stable/queens
     location: 2.6.1

deliverables/queens/solum-dashboard.yaml

@@ -13,6 +13,10 @@ releases:
     projects:
       - repo: openstack/solum-dashboard
         hash: fe30c1b1f4cf4fed18a0af8a29e8b45cec14cbdf
+  - version: queens-eol
+    projects:
+      - repo: openstack/solum-dashboard
+        hash: 79ee6fac1891f3b68702d57e2182ff1e68ae3083
 branches:
   - location: 2.3.0
     name: stable/queens

deliverables/queens/solum.yaml

@@ -16,6 +16,10 @@ releases:
     projects:
       - repo: openstack/solum
         hash: fb4878589b9bc27eeb4857deaa7ab12287236302
+  - version: queens-eol
+    projects:
+      - repo: openstack/solum
+        hash: 1f2f859bc9df9021fd0412e21be28c7626884f5f
 branches:
   - location: 5.5.1
     name: stable/queens