[qinling] Transition Stein to End of Life

As announced on mailing list [1], this patch transitions the Stein
branch to End of Life. The last patch of the branch will be tagged with
stein-eol tag. stable/stein branch cannot be used anymore and will be
deleted if this patch merges.

This is needed as stable/stein is not actively maintained in recent
period, 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/stein is deleted. 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.

[1] https://lists.openstack.org/pipermail/openstack-discuss/2023-September/034965.html

Change-Id: I887f9c19dc5fafe1f5ca76cc5dbbd2556902ed72

deliverables/stein/python-qinlingclient.yaml

@@ -15,7 +15,12 @@ releases:
     projects:
       - repo: openstack/python-qinlingclient
         hash: dd2ceebb7e0c85eb66f05f2825d506765ab792de
+  - version: stein-eol
+    projects:
+      - repo: openstack/python-qinlingclient
+        hash: b11934949dd0c9deb5aace4224eea690b20dffde
 branches:
   - location: 2.1.0
     name: stable/stein
-release-notes: https://docs.openstack.org/releasenotes/python-qinlingclient/stein.html
+release-notes: 
+  https://docs.openstack.org/releasenotes/python-qinlingclient/stein.html

deliverables/stein/qinling-dashboard.yaml

@@ -18,6 +18,10 @@ releases:
     projects:
       - repo: openstack/qinling-dashboard
         hash: 94b9a551e27b09b232f85b501e96f82c65ba62a7
+  - version: stein-eol
+    projects:
+      - repo: openstack/qinling-dashboard
+        hash: 7c6c5a67b760af163d41dbedfb8e37056178217b
 branches:
   - location: 1.0.0.0rc1
     name: stable/stein

deliverables/stein/qinling.yaml

@@ -19,6 +19,10 @@ releases:
     projects:
       - repo: openstack/qinling
         hash: 756b3dfcde38f7394c36fb2c310874ac28320b07
+  - version: stein-eol
+    projects:
+      - repo: openstack/qinling
+        hash: 0bb88ce95822ea7d201a300f123cec97e3e4e88f
 branches:
   - location: 2.0.0.0rc1
     name: stable/stein