* Add ansible-lint as gitlab-ci step
* Fix jinja2 syntax in include_tasks that breaks ansible-lint
* Use a block scalar to get around gitlab quoting/escaping rules
* Run ansible-lint in verbose mode in CI
* Lint everything in the repository with yamllint
* yamllint fixes: syntax fixes only
* yamllint fixes: move comments to play names
* yamllint fixes: indent comments in .gitlab-ci.yml file
* bootstrap: rework role
* support being called from a non-root user
* run some commands in check mode
* unify spelling/task names
* bootstrap: fix wording of comments for check_mode: false
* bootstrap: remove setup-pipelining task