ci(gitlab-ci): use templates from a common repository

.gitlab-ci.yml

@@ -6,13 +6,16 @@ include:
   - project: "open-source/gitlab-ci-templates"
     ref: "branch/default"
     file:
-      - "templates/no-duplicated-ci-pipelines.yml" # use workflow to avoid duplicated pipelines
-      - "templates/lint/flake8.yml" # will do the equivalent of 'tox -e flake8'
-      - "templates/lint/check-manifest.yml" # will do the equivalent of 'tox -e check-manifest'
-      - "templates/lint/black.yml" # will do the equivalent of 'tox -e black'
-      - "templates/tests/py3.yml" # will do the equivalent of 'tox -e py3'
-      - "templates/create-release-on-heptapod.yml" # this will create a release on heptapod
-      - "templates/upload-to-pypi.yml" # on a new mercurial tag (expected to be done with release-new), will push a release on pypi
+      - "templates/no-duplicated-ci-pipelines.yml"  # use workflow to avoid duplicated pipelines
+      - "templates/lint/flake8.yml"  # will do the equivalent of 'tox -e flake8'
+      - "templates/lint/black.yml"  # will do the equivalent of 'tox -e black'
+      - "templates/lint/check-manifest.yml"  # will do the equivalent of 'tox -e check-manifest'
+      - "templates/lint/yamllint.yml"  # will do the equivalent of 'tox -e yamllint'
+      - "templates/tests/py3.yml"  # will do the equivalent of 'tox -e py3'
+      - "templates/create-release-on-heptapod.yml"  # this will create a release on heptapod
+      - "templates/upload-to-pypi.yml"  # on a new mercurial tag (expected to be done with release-new), will push a release on pypi
+  # uncomment and uses to customize/extend the configuration here if needed
+  # (it needs to be at the same level than "- project")
   # - ".gitlab-ci-extended.yml"
 
 stages:
@@ -20,17 +23,3 @@ stages:
   - tests
   - release
   - publish
-
-yamllint:
-  image: python
-  stage: lint
-  rules:
-    - changes:
-        - "**/*.yaml"
-        - "*.yaml"
-        - "**/*.yml"
-        - "*.yml"
-  before_script:
-    - pip install tox
-  script:
-    - tox -e yamllint