[Telemetry] Transition 2023.1 Antelope to Unmaintained

This branch reached the end of its official stable maintained period,
hence this patch transition stable/2023.1 branch to Unmaintained. (For
details about Unmaintained state please see: [1][2])

The transitions is as follows:
- tip of the stable/2023.1 branch is tagged with 2023.1-eom tag
- unmaintained/2023.1 branch will be cut from 2023.1-eom tag
- stable/2023.1 branch will be deleted

Note:
- there will no longer be official releases off of 2023.1 branch after
  this transition
- backports can be pushed to unmaintained/2023.1 branch
- openstack-unmaintained-core (or <project>-unmaintained-core groups if
  such exists) have the rights to merge patches

Important: please +1 if the team is ready for us to proceed with this
transition, or -1 if there are any final 2023.1 Antelope stable release
with backports currently in flight that we should wait for. For the
latter case, please propose a final 2023.1 Antelope stable release
patch, and rebase this patch on top of that, with the latest commit
hash of stable/2023.1.

The planned transition deadline was October 30th, 2024 [3] last week,
so please approve this patch as soon as possible if the project is
ready for the transition.

[1] https://docs.openstack.org/project-team-guide/stable-branches.html#unmaintained
[2] https://governance.openstack.org/tc/resolutions/20230724-unmaintained-branches.html
[3] https://releases.openstack.org

Change-Id: Iba047da4dab23efa322f174e513bbe635abccdc1

deliverables/antelope/aodh.yaml

@@ -15,7 +15,13 @@ releases:
       - repo: openstack/aodh
         hash: aa91a3b6141dd3177d581c5517ae9fe37e75ab4c
     diff-start: 15.0.0
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/aodh
+        hash: 61691e5d96fd97547807bece2910d4d982d457c1
 branches:
   - name: stable/2023.1
     location: 16.0.0.0rc1
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
 release-notes: https://docs.openstack.org/releasenotes/aodh/2023.1.html

deliverables/antelope/ceilometer.yaml

@@ -15,7 +15,13 @@ releases:
       - repo: openstack/ceilometer
         hash: ccce41555008fcffc941c91d1d1090be6611a57e
     diff-start: 19.0.0
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/ceilometer
+        hash: a0385d3c52f85b9cecdc43f30eb72e99177fe691
 branches:
   - name: stable/2023.1
     location: 20.0.0.0rc1
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
 release-notes: https://docs.openstack.org/releasenotes/ceilometer/2023.1.html

deliverables/antelope/ceilometermiddleware.yaml

@@ -11,7 +11,14 @@ releases:
     projects:
       - repo: openstack/ceilometermiddleware
         hash: fecef0bd8429066c1b7d6c57cea5a2e3f98dbdfb
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/ceilometermiddleware
+        hash: 7fbc8dd9bf04b0bda3c66fb7ed5e6c92d47048ff
 branches:
   - name: stable/2023.1
     location: 3.1.0
-release-notes: https://docs.openstack.org/releasenotes/ceilometermiddleware/2023.1.html
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/ceilometermiddleware/2023.1.html

deliverables/antelope/python-aodhclient.yaml

@@ -20,6 +20,12 @@ releases:
     projects:
       - repo: openstack/python-aodhclient
         hash: de9633ae0e4dabf1a6dd82eb4f7fe61057f08474
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/python-aodhclient
+        hash: de9633ae0e4dabf1a6dd82eb4f7fe61057f08474
 branches:
   - name: stable/2023.1
     location: 3.2.0
+  - name: unmaintained/2023.1
+    location: 2023.1-eom