add template indication to back port; create action based on label to backport changes

Author: acosferreira

.github/pull_request_template.md

@@ -11,6 +11,45 @@ Jira Issue: <https://issues.redhat.com/browse/AAP-NNNN>
 1. Pull down the PR
 2. ...
 3. ...
+## Type of Change
+- [ ] Bug fix (non-breaking change fixing an issue)
+- [ ] New feature (non-breaking change adding functionality)
+- [ ] Breaking change (fix or feature causing existing functionality to break)
+- [ ] Security fix
+- [ ] Performance improvement
+- [ ] Code refactoring
+- [ ] Documentation update
+- [ ] CI/CD update
+
+## Backport Policy
+
+This change should be:
+- [ ] **Not backported** - main/master only
+- [ ] **Backported** to specific releases (add labels after merge)
+
+### Automated Backport Instructions
+
+**After this PR is merged**, add one or more labels to automatically create backport PRs:
+
+- `backport/stable-2.4` - Backport to stable-2.4 branch
+- `backport/stable-2.5` - Backport to stable-2.5 branch
+- `backport/stable-2.6` - Backport to stable-2.6 branch
+- `backport/all` - Backport to all active stable branches
+- `no-backport` - Explicitly mark as not needing backport
+
+### Backport Justification
+<!-- Required if backporting. Explain why this needs to be in older releases -->
+<!-- Examples: -->
+<!-- - Critical bug affecting production -->
+<!-- - Security vulnerability fix (include CVE if applicable) -->
+<!-- - Regression introduced in X.Y.Z -->
+<!-- - Customer-blocking issue -->
+<!-- - Data corruption/loss prevention -->
+
+**Special backport considerations:**
+<!-- Any conflicts, dependencies, or modifications needed for backport -->
+<!-- Will this apply cleanly to older releases? -->
+<!-- Does this depend on other commits that also need backporting? -->
 
 ### Scenarios tested
 <!-- Describe the scenarios you've already manually verified, if applicable. -->

.github/workflows/backport.yml

@@ -0,0 +1,40 @@
+name: Backport merged pull request
+
+on:
+  pull_request_target:
+    types: [closed, labeled]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  backport:
+    name: Backport PR
+    runs-on: ubuntu-latest
+
+    if: github.event.pull_request.merged == true
+    steps:
+
+      - name: Backport to release branches
+        uses: korthout/backport-action@v3
+        with:
+          label_pattern: '^backport/(?<target>.+)$'
+
+          target_branches: |
+            all:stable-2.4 stable-2.5 stable-2.6
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+          copy_labels_pattern: '^(bug|security|breaking-change|dependencies)$'
+
+          pull_description: |
+            # Backport of #${pull_number}
+            ${pull_description}
+            ---
+            **Original PR:** #${pull_number}
+            **Backported by:** @${{ github.actor }}
+            ## Backport Verification
+            - [ ] Changes apply cleanly
+            - [ ] Tests pass
+            - [ ] No conflicts with target branch
+          pull_title: "[Backport ${target_branch}] ${pull_title}"