Backport assistant onboarding with LTS support #9224 (#21058)

* Config changes to use backport-assistant with lts support

Co-authored-by: Michael Zalimeni <michael.zalimeni@hashicorp.com>

---------

Co-authored-by: claire labry <claire@hashicorp.com>
Co-authored-by: Michael Zalimeni <michael.zalimeni@hashicorp.com>

.github/workflows/backport-assistant.yml

@@ -19,7 +19,7 @@ jobs:
   backport:
     if: github.event.pull_request.merged
     runs-on: ubuntu-latest
-    container: hashicorpdev/backport-assistant:0.3.4
+    container: hashicorpdev/backport-assistant:0.4.0
     steps:
       - name: Run Backport Assistant for release branches
         run: |
@@ -28,10 +28,24 @@ jobs:
           BACKPORT_LABEL_REGEXP: "backport/(?P<target>\\d+\\.\\d+)"
           BACKPORT_TARGET_TEMPLATE: "release/{{.target}}.x"
           GITHUB_TOKEN: ${{ secrets.ELEVATED_GITHUB_TOKEN }}
+          ENABLE_VERSION_MANIFESTS: true
+  backport-ent:
+    if: github.event.pull_request.merged && contains(join(github.event.pull_request.labels.*.name), 'backport/ent')
+    runs-on: ubuntu-latest
+    container: hashicorpdev/backport-assistant:0.4.0
+    steps:
+      - name: Trigger backport for Enterprise
+        uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3.0.0
+        with:
+          token: ${{ secrets.ELEVATED_GITHUB_TOKEN }}
+          repository: hashicorp/consul-enterprise
+          event-type: ent-backport
+          client-payload: ${{ toJson(github.event) }}
   handle-failure:
     needs:
       - backport
-    if: always() && needs.backport.result == 'failure'
+      - backport-ent
+    if: always() && (needs.backport.result == 'failure' || needs.backport-ent.result == 'failure')
     runs-on: ubuntu-latest
     steps:
       - name: Comment on PR
@@ -41,3 +55,4 @@ jobs:
             -X POST \
             -d "{ \"body\": \"${github_message}\"}" \
             "https://api.github.com/repos/${GITHUB_REPOSITORY}/issues/${{ github.event.pull_request.number }}/comments"
+

.release/versions.hcl

@@ -0,0 +1,17 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: BUSL-1.1
+
+# This manifest file describes active releases and is consumed by the backport tooling.
+
+schema = 1
+active_versions {
+  version "1.18" {
+    ce_active = true
+    lts       = true
+  }
+  version "1.17" {}
+  version "1.16" {}
+  version "1.15" {
+    lts = true
+  }
+}