[keystone] 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: I9dcbfc22106a1e48adede3328aaab35aa849480a

deliverables/stein/keystone.yaml

@@ -27,6 +27,10 @@ releases:
     projects:
       - repo: openstack/keystone
         hash: 95b2bbeab113d9f04d1c81f7f1b48bf692bce979
+  - version: stein-eol
+    projects:
+      - repo: openstack/keystone
+        hash: 1d9baa62ac4c3df8ef998d7c331deedece123123
 branches:
   - location: 15.0.0.0rc1
     name: stable/stein

deliverables/stein/keystoneauth.yaml

@@ -35,6 +35,10 @@ releases:
     projects:
       - repo: openstack/keystoneauth
         hash: 51874630142d7de4cb8226f04f102402a0ed89ed
+  - version: stein-eol
+    projects:
+      - repo: openstack/keystoneauth
+        hash: 51874630142d7de4cb8226f04f102402a0ed89ed
 team: keystone
 type: library
 repository-settings:

deliverables/stein/keystonemiddleware.yaml

@@ -23,7 +23,12 @@ releases:
     projects:
       - repo: openstack/keystonemiddleware
         hash: 89af8f0192a3446e416efe2215b47c4e3a89809d
+  - version: stein-eol
+    projects:
+      - repo: openstack/keystonemiddleware
+        hash: 89af8f0192a3446e416efe2215b47c4e3a89809d
 branches:
   - location: 6.0.0
     name: stable/stein
-release-notes: https://docs.openstack.org/releasenotes/keystonemiddleware/stein.html
+release-notes: 
+  https://docs.openstack.org/releasenotes/keystonemiddleware/stein.html

deliverables/stein/pycadf.yaml

@@ -13,6 +13,10 @@ releases:
     projects:
       - repo: openstack/pycadf
         hash: 4398b7d34e40f250a42e2ba537ca995a8c37376d
+  - version: stein-eol
+    projects:
+      - repo: openstack/pycadf
+        hash: cb93a8beab5c64841cc3d523f187ec1468754700
 repository-settings:
   openstack/pycadf: {}
 branches:

deliverables/stein/python-keystoneclient.yaml

@@ -23,7 +23,12 @@ releases:
     projects:
       - repo: openstack/python-keystoneclient
         hash: abe757aa70b262068f26b2b634b8fff06a8fbfdf
+  - version: stein-eol
+    projects:
+      - repo: openstack/python-keystoneclient
+        hash: abe757aa70b262068f26b2b634b8fff06a8fbfdf
 branches:
   - location: 3.19.0
     name: stable/stein
-release-notes: https://docs.openstack.org/releasenotes/python-keystoneclient/stein.html
+release-notes: 
+  https://docs.openstack.org/releasenotes/python-keystoneclient/stein.html