[swift] Transition EM branches to Unmaintained

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

So this patch transitions victoria, wallaby, and xena EM branches to
Unmaintained as follows:
- tip of the given branch will be tagged with <series>-eom tag
- unmaintained/<series> branch will be cut from <series>-eom tag
- stable/<series> branch will be deleted

Some further notes:
- stable policy still applies
- backports can be pushed against unmaintained/<series> branch
- openstack-unmaintained-core group 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: Ib58b3012e7b4f05ae3922c20e7977c08ef86923c

deliverables/victoria/python-swiftclient.yaml

@@ -19,7 +19,14 @@ releases:
     projects:
       - repo: openstack/python-swiftclient
         hash: 9d8db8f6126542dc18ea1b14e078d64cc1a254e4
+  - version: victoria-eom
+    projects:
+      - repo: openstack/python-swiftclient
+        hash: 73a16ecaa90a5951db7e9b138e673625338b571a
 branches:
   - name: stable/victoria
     location: 3.10.1
-release-notes: https://docs.openstack.org/releasenotes/python-swiftclient/victoria.html
+  - name: unmaintained/victoria
+    location: victoria-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-swiftclient/victoria.html

deliverables/victoria/swift.yaml

@@ -14,9 +14,15 @@ releases:
     projects:
       - repo: openstack/swift
         hash: d6c6ab764e4c0e737b99f19b2495f1b9aab8c0d2
+  - version: victoria-eom
+    projects:
+      - repo: openstack/swift
+        hash: f80dce1f1921ec7812893bb22243b86aa7356f93
 branches:
   - name: stable/victoria
     location: 2.26.0
+  - name: unmaintained/victoria
+    location: victoria-eom
 cycle-highlights:
   - Improved time-to-first-byte latencies when reading erasure-coded
     data.

deliverables/wallaby/python-swiftclient.yaml

@@ -19,7 +19,14 @@ releases:
     projects:
       - repo: openstack/python-swiftclient
         hash: 06b36ae0e2ee6054162bfb1d9f3cdda39eacbad5
+  - version: wallaby-eom
+    projects:
+      - repo: openstack/python-swiftclient
+        hash: c3e3c2b0a784cd384257185e43117a4dcceeb1ff
 branches:
   - name: stable/wallaby
     location: 3.11.1
-release-notes: https://docs.openstack.org/releasenotes/python-swiftclient/wallaby.html
+  - name: unmaintained/wallaby
+    location: wallaby-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-swiftclient/wallaby.html

deliverables/wallaby/swift.yaml

@@ -14,9 +14,15 @@ releases:
     projects:
       - repo: openstack/swift
         hash: c6a64036651e18f3d7d0715c5d4876257aaa0e6f
+  - version: wallaby-eom
+    projects:
+      - repo: openstack/swift
+        hash: 16dbcae9df9773f2b2bfea41fd4156e16aa14b37
 branches:
   - name: stable/wallaby
     location: 2.27.0
+  - name: unmaintained/wallaby
+    location: wallaby-eom
 cycle-highlights:
   - Static large object segments can now be deleted asynchronously;
     multipart uploads deleted through the S3 API will always be deleted

deliverables/xena/python-swiftclient.yaml

@@ -15,7 +15,14 @@ releases:
     projects:
       - repo: openstack/python-swiftclient
         hash: 38c435f88833869c0d0121a6e7e2c16ac1a7e3be
+  - version: xena-eom
+    projects:
+      - repo: openstack/python-swiftclient
+        hash: 8bd346f3b9abda7282fffb6bbe7341577ca1dff1
 branches:
   - name: stable/xena
     location: 3.12.0
-release-notes: https://docs.openstack.org/releasenotes/python-swiftclient/xena.html
+  - name: unmaintained/xena
+    location: xena-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-swiftclient/xena.html

deliverables/xena/swift.yaml

@@ -18,7 +18,13 @@ releases:
     projects:
       - repo: openstack/swift
         hash: b1916f81e2a598b41ab7281259c78715d7e46955
+  - version: xena-eom
+    projects:
+      - repo: openstack/swift
+        hash: 6fb3011a7f25803f399f9f7f8402521bca164183
 branches:
   - name: stable/xena
     location: 2.28.0
+  - name: unmaintained/xena
+    location: xena-eom
 release-notes: https://docs.openstack.org/releasenotes/swift/xena.html