[blazar] 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: Ie96c4177ef87d93dc52ddf2ef24dc43ff85b4a9b

deliverables/antelope/blazar-dashboard.yaml

@@ -20,8 +20,14 @@ releases:
     projects:
       - repo: openstack/blazar-dashboard
         hash: 5a04368c1e3c05afc46db521442bef4686eb18f2
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/blazar-dashboard
+        hash: 5a04368c1e3c05afc46db521442bef4686eb18f2
 branches:
   - name: stable/2023.1
     location: 9.0.0.0rc1
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
 release-notes:
   https://docs.openstack.org/releasenotes/blazar-dashboard/2023.1.html

deliverables/antelope/blazar-nova.yaml

@@ -16,7 +16,13 @@ releases:
       - repo: openstack/blazar-nova
         hash: 5579fb4728187e9bd3ffce2b396ea98c65fc9b42
     diff-start: 2.6.1
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/blazar-nova
+        hash: cb1881699a5d189be885f2be94caecbb8c288bc3
 branches:
   - name: stable/2023.1
     location: 3.0.0.0rc1
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
 release-notes: https://docs.openstack.org/releasenotes/blazar-nova/2023.1.html

deliverables/antelope/blazar.yaml

@@ -27,7 +27,13 @@ releases:
     projects:
       - repo: openstack/blazar
         hash: aa2451eee9d125c188de758fcae980cc29c860a5
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/blazar
+        hash: aa2451eee9d125c188de758fcae980cc29c860a5
 branches:
   - name: stable/2023.1
     location: 11.0.0.0rc1
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
 release-notes: https://docs.openstack.org/releasenotes/blazar/2023.1.html

deliverables/antelope/python-blazarclient.yaml

@@ -11,7 +11,14 @@ releases:
     projects:
       - repo: openstack/python-blazarclient
         hash: 30eab20112ba0231e4c10038bd2275f7cc43f7fd
+  - version: 2023.1-eom
+    projects:
+      - repo: openstack/python-blazarclient
+        hash: d5d09d205f990aaf7593b340c12b9c3288dff991
 branches:
   - name: stable/2023.1
     location: 3.6.0
-release-notes: https://docs.openstack.org/releasenotes/python-blazarclient/2023.1.html
+  - name: unmaintained/2023.1
+    location: 2023.1-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-blazarclient/2023.1.html