Add pytest for Fabric2.x

Signed-off-by: Cristian Le <[email protected]>

Author: LecrisUT

.github/workflows/tests.yaml

@@ -18,11 +18,13 @@ jobs:
 
   pytest:
     name: Run pytests
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     needs: [ pre-commit ]
     strategy:
       matrix:
+        os: [ubuntu-20.04, ubuntu-latest]
         python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10", "3.11" ]
+      fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python  ${{ matrix.python-version }}