[murano] 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: Iae08d7786abe175c618ff82c5d5a5e9d86dd01dd

deliverables/stein/murano-agent.yaml

@@ -14,6 +14,10 @@ releases:
     projects:
       - repo: openstack/murano-agent
         hash: ce41ef5b782704339ad54c97f129164c6b8e28e3
+  - version: stein-eol
+    projects:
+      - repo: openstack/murano-agent
+        hash: 47b204ff182b629aef39d43da5edca00908d06a5
 branches:
   - location: 3.6.0
     name: stable/stein

deliverables/stein/murano-dashboard.yaml

@@ -20,7 +20,12 @@ releases:
     projects:
       - repo: openstack/murano-dashboard
         hash: 005f36b347ac0fa590f4dc372d7ba842fa23f836
+  - version: stein-eol
+    projects:
+      - repo: openstack/murano-dashboard
+        hash: 680e17e6bb84a85bbefea6cb8ddf690bf0f3b9e1
 branches:
   - location: 7.0.0.0rc1
     name: stable/stein
-release-notes: https://docs.openstack.org/releasenotes/murano-dashboard/stein.html
+release-notes: 
+  https://docs.openstack.org/releasenotes/murano-dashboard/stein.html

deliverables/stein/murano.yaml

@@ -27,6 +27,10 @@ releases:
     projects:
       - repo: openstack/murano
         hash: 75a85b0c0c8d810f4b3cc246cc5adf3ba52ec006
+  - version: stein-eol
+    projects:
+      - repo: openstack/murano
+        hash: d9adc30cea02ae83ce5e13976a7e1a5cff7bfd20
 branches:
   - location: 7.0.0.0rc1
     name: stable/stein

deliverables/stein/python-muranoclient.yaml

@@ -15,7 +15,12 @@ releases:
     projects:
       - repo: openstack/python-muranoclient
         hash: ed7a0ee6823806e3b008b75247a273bc8b3d2981
+  - version: stein-eol
+    projects:
+      - repo: openstack/python-muranoclient
+        hash: 465a625ae3b432c538f4b8c6a13dd8aec5f21f50
 branches:
   - location: 1.2.0
     name: stable/stein
-release-notes: https://docs.openstack.org/releasenotes/python-muranoclient/stein.html
+release-notes: 
+  https://docs.openstack.org/releasenotes/python-muranoclient/stein.html