[Telemetry] Transition Yoga to Unmaintained

With the new TC resolution the community replaces Extended Maintenance
with Unmaintained status [1].

So this patch transitions stable/yoga branch to Unmaintained as follows:
- tip of the stable/yoga branch is tagged with yoga-eom tag
- unmaintained/yoga branch will be cut from yoga-eom tag
- stable/yoga branch will be deleted

Some further notes:
- there will no longer be official releases off of yoga branch
- backports can be pushed against unmaintained/yoga branch
- openstack-unmaintained-core and <project>-unmaintained-core groups
  will have the rights to merge patches

For further details please read the resolution [1] & review and +1 this
patch if this is correct as soon as possible.

[1] https://governance.openstack.org/tc/resolutions/20230724-unmaintained-branches.html

Change-Id: I7b1f77b8742cbfa8ad098e4c6724783d03ac2dd5

deliverables/yoga/aodh.yaml

@@ -19,7 +19,13 @@ releases:
     projects:
       - repo: openstack/aodh
         hash: f9abe01eb14416474c2bc3c15311b5235adbf661
+  - version: yoga-eom
+    projects:
+      - repo: openstack/aodh
+        hash: 02ac4af451b1d6b3d031dc1ab26c648d3b3b0c68
 branches:
   - name: stable/yoga
     location: 14.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/aodh/yoga.html

deliverables/yoga/ceilometer.yaml

@@ -19,7 +19,13 @@ releases:
     projects:
       - repo: openstack/ceilometer
         hash: 82feb96ed324dca8cbf4773bbdf91eb9e33d7b67
+  - version: yoga-eom
+    projects:
+      - repo: openstack/ceilometer
+        hash: 53f31524ee9ea0082ad17b9ee2d0005b5f85df30
 branches:
   - name: stable/yoga
     location: 18.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/ceilometer/yoga.html

deliverables/yoga/ceilometermiddleware.yaml

@@ -15,7 +15,14 @@ releases:
     projects:
       - repo: openstack/ceilometermiddleware
         hash: 4a2da3e28da69fc3b319c6f1a0fe40d909882f79
+  - version: yoga-eom
+    projects:
+      - repo: openstack/ceilometermiddleware
+        hash: 2cf19123102d58986071ac1cdbd4b53b544fe2c8
 branches:
   - name: stable/yoga
     location: 2.4.1
-release-notes: https://docs.openstack.org/releasenotes/ceilometermiddleware/yoga.html
+  - name: unmaintained/yoga
+    location: yoga-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/ceilometermiddleware/yoga.html

deliverables/yoga/python-aodhclient.yaml

@@ -16,6 +16,12 @@ releases:
     projects:
       - repo: openstack/python-aodhclient
         hash: c1d7fe16ff4da5a1d1dc61e379b58ace9945b818
+  - version: yoga-eom
+    projects:
+      - repo: openstack/python-aodhclient
+        hash: 621b4aef88edcb34712c2060a27a9f10431974d7
 branches:
   - name: stable/yoga
     location: 2.4.1
+  - name: unmaintained/yoga
+    location: yoga-eom