add setup debug session for github action if fail

Author: christopherChenYW

.github/workflows/unittest.yaml

@@ -33,6 +33,13 @@ jobs:
       - name: Run Go test
         run: |
           make test ENVTEST_K8S_VERSION=${{ matrix.kubernetes-version }}
+          
+      - name: Setup Debug Session
+        uses: mxschmitt/action-tmate@v3
+        timeout-minutes: 15
+        if: failure()
+        with:
+          detached: false
 
       - name: Coveralls report
         uses: shogo82148/actions-goveralls@v1