1501-enhance-PR-testing-workflow (#1502)

* test new action for quick test; add temp tests

Signed-off-by: Wenqi Li <[email protected]>

* testing action

Signed-off-by: Wenqi Li <[email protected]>

* remove temp test

Signed-off-by: Wenqi Li <[email protected]>

Author: wyli

.github/workflows/pythonapp.yml

@@ -15,6 +15,10 @@ jobs:
   flake8-py3:
     runs-on: ubuntu-latest
     steps:
+    - name: Cancel Previous Jobs
+      uses: styfle/[email protected]
+      with:
+        access_token: ${{ github.token }}
     - uses: actions/checkout@v2
     - name: Set up Python 3.8
       uses: actions/setup-python@v2
@@ -184,6 +188,10 @@ jobs:
       options: --gpus all
     runs-on: [self-hosted, linux, x64, common]
     steps:
+    - name: Cancel Previous Self-hosted Runs
+      uses: styfle/[email protected]
+      with:
+        access_token: ${{ github.token }}
     - uses: actions/checkout@v2
     - name: apt install
       run: |