tests: use github workflow for ansible-lint

let's use github workflow instead of travis.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

.github/workflows/ansible-lint.yml

+name: ansible-lint
+on: [pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ '3.6', '3.7', '3.8' ]
+    name: Python ${{ matrix.python-version }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+          architecture: x64
+      - run: pip install -r <(grep ansible tests/requirements.txt) ansible-lint
+      - run: ansible-lint -x 106,204,205,208 -v --force-color ./roles/*/ ./infrastructure-playbooks/*.yml site-container.yml.sample site-container.yml.sample
\ No newline at end of file

.travis.yml

@@ -7,7 +7,5 @@ notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/
 install:
   - pip install -r tests/requirements.txt
-  - pip install ansible-lint==4.2.0
 script:
   - if [[ -n $(grep --exclude-dir=.git -P "\xa0" -r .) ]]; then echo 'NBSP characters found'; exit 1; fi
-  - for i in $(ls -1 roles/); do ANSIBLE_LOG_PATH=/dev/null ansible-lint -x 204 -v roles/$i/; if [ $? -ne 0 ]; then exit 1; fi; done