migrate to new release branch based workflow

.github/workflows/e2e.yaml

@@ -1,11 +1,11 @@
 name: E2E Test Check
 on:
-  workflow_dispatch:
+  pull_request:
-    inputs:
+    types: ['opened', 'synchronize']
-      pr_number:
+    paths:
-        description: '(Required) pull request number to test against'
+      - '.github/**'
-        type: string
+      - '.github/workflows/**'
-        required: true
+      - 'quickstart/**'
 permissions:
   actions: write
   contents: read
@@ -17,14 +17,24 @@ jobs:
     environment:
       name: acctests
     steps:
+      - name: Checking for Fork
+        shell: pwsh
+        run: |
+          $isFork = "${{ github.event.pull_request.head.repo.fork }}"
+          if($isFork -eq "true") {
+            echo "### WARNING: This workflow is disabled for forked repositories. Please follow the [release branch process](https://azure.github.io/Azure-Verified-Modules/contributing/terraform/terraform-contribution-flow/#5-create-a-pull-request-to-the-upstream-repository) if end to end tests are required." >> $env:GITHUB_STEP_SUMMARY
+          }
       - name: checkout
+        if: github.event.pull_request.head.repo.fork == false
         uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 #v3.6.0
       - name: checkout pr
+        if: github.event.pull_request.head.repo.fork == false
         env:
           GH_TOKEN: ${{ github.token }}
         run:
           gh pr checkout ${{ inputs.pr_number }}
       - name: Get changed files
+        if: github.event.pull_request.head.repo.fork == false
         id: changed-files
         uses: tj-actions/changed-files@v34
         with:
@@ -34,6 +44,7 @@ jobs:
           files_ignore: "**/TestRecord.md"
           dir_names_max_depth: 2
       - name: test pr
+        if: github.event.pull_request.head.repo.fork == false
         env:
           ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
         run: |