[cloudkitty] Transition Zed to Unmaintained

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

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

Note:
- there will no longer be official releases off of zed branch after this
  transition
- backports can be pushed to unmaintained/yoga 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 Zed stable release with
backports currently in flight that we should wait for. For the latter
case, please propose a final Zed stable release patch, and rebase this
patch on top of that, with the latest commit hash of stable/zed.

The transition deadline is May 2nd, 2024. [3]

[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: I75b6eccf54a5331310e2c0eca497af8de7dc88f6

deliverables/zed/cloudkitty-dashboard.yaml

@@ -16,7 +16,14 @@ releases:
       - repo: openstack/cloudkitty-dashboard
         hash: 8175285adf94e19b682d54af8f51e96bcfe3e203
     diff-start: 14.0.0
+  - version: zed-eom
+    projects:
+      - repo: openstack/cloudkitty-dashboard
+        hash: d90a4d02cb1b74f72af3d619561e045f4de7fbf2
 branches:
   - name: stable/zed
     location: 15.0.0.0rc1
-release-notes: https://docs.openstack.org/releasenotes/cloudkitty-dashboard/zed.html
+  - name: unmaintained/zed
+    location: zed-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/cloudkitty-dashboard/zed.html

deliverables/zed/cloudkitty.yaml

@@ -24,7 +24,13 @@ releases:
     projects:
       - repo: openstack/cloudkitty
         hash: 56ec4f19a10eb9769b3144e3c4682595b53af4ab
+  - version: zed-eom
+    projects:
+      - repo: openstack/cloudkitty
+        hash: 2b0adbcd55007d4e08c1878b3c1ca96733c1effd
 branches:
   - name: stable/zed
     location: 17.0.0.0rc1
+  - name: unmaintained/zed
+    location: zed-eom
 release-notes: https://docs.openstack.org/releasenotes/cloudkitty/zed.html

deliverables/zed/python-cloudkittyclient.yaml

@@ -11,7 +11,14 @@ releases:
     projects:
       - repo: openstack/python-cloudkittyclient
         hash: 07d4e86ca48c3615c2a6e989533ebfd96cd4e760
+  - version: zed-eom
+    projects:
+      - repo: openstack/python-cloudkittyclient
+        hash: 3f07486434fd6d2fe17f544818ef7b6211b49413
 branches:
   - name: stable/zed
     location: 4.6.0
-release-notes: https://docs.openstack.org/releasenotes/python-cloudkittyclient/zed.html
+  - name: unmaintained/zed
+    location: zed-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-cloudkittyclient/zed.html