[skip-ci] #0: Use PR Comment to trigger test workflow (#14184)

.github/workflows/test-comment.yaml

@@ -0,0 +1,19 @@
+
+name: "All post-commit tests via comment"
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    if: github.event.issue.pull_request && contains(github.event.comment.body, '/test')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Test
+        run: |
+          echo "Testing..."
+          ls