[Build] Add Github workflows (#9517)

As an replacement to Travis CI.

.github/workflows/superset-e2e.yml

@@ -0,0 +1,91 @@
+name: E2E
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+  cypress:
+    name: Cypress
+    runs-on: ubuntu-18.04
+    strategy:
+      fail-fast: false
+      matrix:
+        browser: ['chrome']
+    env:
+      FLASK_ENV: development
+      SUPERSET_CONFIG: tests.superset_test_config
+      SUPERSET__SQLALCHEMY_DATABASE_URI:
+        postgresql+psycopg2://superset:superset@127.0.0.1:15432/superset
+      PYTHONPATH: ${{ github.workspace }}
+      REDIS_PORT: 16379
+      CI: github-actions
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+    services:
+      postgres:
+        image: postgres:10-alpine
+        env:
+          POSTGRES_USER: superset
+          POSTGRES_PASSWORD: superset
+        ports:
+          - 15432:5432
+      redis:
+        image: redis:5-alpine
+        ports:
+          - 16379:6379
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Setup Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: '3.6'
+
+    - name: Install dependencies
+      uses: apache-superset/cached-dependencies@ddf7d7f
+      with:
+        # Run commands in parallel does help initial installation without cache
+        parallel: true
+        run: |
+          npm-install && npm-build
+          pip-install && setup-postgres && testdata
+          cypress-install
+
+    - name: Cypress run all
+      env:
+        CYPRESS_GROUP: Default
+        CYPRESS_PATH: 'cypress/integration/*/*'
+      run: |
+        # Start Flask and run Cypress
+
+        # --no-debugger means disable the interactive debugger on the 500 page
+        # so errors can print to stderr.
+        flask run --no-debugger --with-threads -p 8081 &
+
+        sleep 3 # wait for the Flask app to start
+
+        cd ${{ github.workspace }}/superset-frontend/cypress-base/
+        npm run cypress -- run \
+          --browser ${{ matrix.browser }} --spec "${{ env.CYPRESS_PATH }}" \
+          --record --group "${{ env.CYPRESS_GROUP }}" \
+          --ci-build-id ${{ github.event_name }}-${{ github.run_id }}
+
+    - name: Cypress run SQL Lab (with backend persist)
+      env:
+        SUPERSET_CONFIG: tests.superset_test_config_sqllab_backend_persist
+        CYPRESS_GROUP: Backend persist
+        CYPRESS_PATH: 'cypress/integration/sqllab/*'
+      run: |
+        # Start Flask with alternative config and run Cypress
+
+        killall python # exit the running Flask app
+        flask run --no-debugger --with-threads -p 8081 &
+        sleep 3 # wait for the Flask app to start
+
+        cd ${{ github.workspace }}/superset-frontend/cypress-base/
+        npm run cypress -- run \
+          --browser ${{ matrix.browser }} --spec "${{ env.CYPRESS_PATH }}" \
+          --record --group "${{ env.CYPRESS_GROUP }}" \
+          --ci-build-id ${{ github.event_name }}-${{ github.run_id }}