feat(flake8): integrate flake8-gl-codeclimate for qa reporting

templates/lint/flake8.yml

 ---
 flake8:
   before_script:
-    - pip install tox
+    - pip install tox flake8-gl-codeclimate
   stage: lint
@@ -5,2 +5,8 @@
   stage: lint
-  script: tox -e flake8
+  script:
+    - tox -e flake8 -- --exit-zero --format gl-codeclimate --output-file gl-code-quality-report.json
+    - tox -e flake8
+  artifacts:
+    when: always
+    reports:
+      codequality: gl-code-quality-report.json