Add integration tests for Python2

Author: Lorak-mmk

.github/workflows/integration-tests-python2.yml

@@ -0,0 +1,22 @@
+name: Integration tests Python2
+
+on:
+  pull_request:
+    branches:
+     - master
+
+jobs:
+  tests:
+    runs-on: ubuntu-20.04
+    if: "!contains(github.event.pull_request.labels.*.name, 'disable-integration-tests')"
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Python2.7
+      uses: actions/setup-python@v4
+      with:
+        python-version: 2.7
+
+    - name: Test with pytest
+      run: |
+        ./ci/run_integration_test.sh tests/integration/standard/test_authentication.py tests/integration/standard/test_cluster.py tests/integration/standard/test_concurrent.py tests/integration/standard/test_connection.py tests/integration/standard/test_control_connection.py tests/integration/standard/test_custom_payload.py tests/integration/standard/test_custom_protocol_handler.py tests/integration/standard/test_cython_protocol_handlers.py tests/integration/standard/test_scylla_cloud.py
+        # can't run this, cause only 2 cpus on github actions: tests/integration/standard/test_shard_aware.py