[zaqar] 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: I51ac024710dae8d291d9b0b459ff13e2d52d2f92

deliverables/zed/python-zaqarclient.yaml

@@ -11,6 +11,12 @@ releases:
     projects:
       - repo: openstack/python-zaqarclient
         hash: e388947aae2c1440ffc8c635d9dc2f702dc2cb27
+  - version: zed-eom
+    projects:
+      - repo: openstack/python-zaqarclient
+        hash: e388947aae2c1440ffc8c635d9dc2f702dc2cb27
 branches:
   - name: stable/zed
     location: 2.4.0
+  - name: unmaintained/zed
+    location: zed-eom

deliverables/zed/zaqar-ui.yaml

@@ -16,7 +16,13 @@ releases:
       - repo: openstack/zaqar-ui
         hash: 9b2623ca3aecd9bd7322c7d807969c744ba4cc16
     diff-start: 12.0.0
+  - version: zed-eom
+    projects:
+      - repo: openstack/zaqar-ui
+        hash: 39d12d3d354fb3f56d8b6fbdbf6c9308af9d38b9
 branches:
   - name: stable/zed
     location: 13.0.0.0rc1
+  - name: unmaintained/zed
+    location: zed-eom
 release-notes: https://docs.openstack.org/releasenotes/zaqar-ui/zed.html

deliverables/zed/zaqar.yaml

@@ -15,7 +15,13 @@ releases:
       - repo: openstack/zaqar
         hash: cdf45da5553f4daed20dc6bd8800360130c75f55
     diff-start: 14.0.0
+  - version: zed-eom
+    projects:
+      - repo: openstack/zaqar
+        hash: fb1aebcdec428c4150bc2cc45fae5e1c4cd91a99
 branches:
   - name: stable/zed
     location: 15.0.0.0rc1
+  - name: unmaintained/zed
+    location: zed-eom
 release-notes: https://docs.openstack.org/releasenotes/zaqar/zed.html