Add command to re-run GitHub Actions tests (kubeflow#2167)

Signed-off-by: Andrey Velichkevich <[email protected]>

.github/workflows/trigger-rerun-test.yaml

@@ -0,0 +1,16 @@
+name: Re-Run PR Tests
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  rerun_pr_tests:
+    name: rerun_pr_tests
+    if: ${{ github.event.issue.pull_request }}
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: estroz/rerun-actions@main
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          comment_id: ${{ github.event.comment.id }}