CI: Support unmaintained branches in release determination

Author: markgoddard

.github/workflows/overcloud-host-image-build.yml

@@ -50,7 +50,7 @@ jobs:
         id: openstack_release
         run: |
           BRANCH=$(awk -F'=' '/defaultbranch/ {print $2}' .gitreview)
-          echo "openstack_release=${BRANCH}" | sed "s|stable/||" >> $GITHUB_OUTPUT
+          echo "openstack_release=${BRANCH}" | sed -E "s,(stable|unmaintained)/,," >> $GITHUB_OUTPUT
 
       # Generate a tag to apply to all built overcloud host images.
       - name: Generate overcloud host image tag

.github/workflows/overcloud-host-image-promote.yml

@@ -43,7 +43,7 @@ jobs:
         id: openstack_release
         run: |
           BRANCH=$(awk -F'=' '/defaultbranch/ {print $2}' .gitreview)
-          echo "openstack_release=${BRANCH}" | sed "s|stable/||" >> $GITHUB_OUTPUT
+          echo "openstack_release=${BRANCH}" | sed -E "s,(stable|unmaintained)/,," >> $GITHUB_OUTPUT
         working-directory: src/kayobe-config
 
       - name: Clone StackHPC Kayobe repository

.github/workflows/overcloud-host-image-upload.yml

@@ -59,7 +59,7 @@ jobs:
         id: openstack_release
         run: |
           BRANCH=$(awk -F'=' '/defaultbranch/ {print $2}' src/kayobe-config/.gitreview)
-          echo "openstack_release=${BRANCH}" | sed "s|stable/||" >> $GITHUB_OUTPUT
+          echo "openstack_release=${BRANCH}" | sed -E "s,(stable|unmaintained)/,," >> $GITHUB_OUTPUT
 
       - name: Clone StackHPC Kayobe repository
         uses: actions/checkout@v4

.github/workflows/stackhpc-ci-cleanup.yml

@@ -30,7 +30,7 @@ jobs:
         id: openstack_release
         run: |
           BRANCH=$(awk -F'=' '/defaultbranch/ {print $2}' src/kayobe-config/.gitreview)
-          echo "openstack_release=${BRANCH}" | sed "s|stable/||" >> $GITHUB_OUTPUT
+          echo "openstack_release=${BRANCH}" | sed -E "s,(stable|unmaintained)/,," >> $GITHUB_OUTPUT
 
       - name: Install OpenStack client
         run: |

.github/workflows/stackhpc-container-image-build.yml

@@ -59,7 +59,7 @@ jobs:
         id: openstack_release
         run: |
           BRANCH=$(awk -F'=' '/defaultbranch/ {print $2}' .gitreview)
-          echo "openstack_release=${BRANCH}" | sed "s|stable/||" >> $GITHUB_OUTPUT
+          echo "openstack_release=${BRANCH}" | sed -E "s,(stable|unmaintained)/,," >> $GITHUB_OUTPUT
 
       # Generate a tag to apply to all built container images.
       # Without this, each kayobe * container image build command would use a different tag.