When upgrading from releases it could happen that you need to do some
manual steps (i.e. upgrading from postgres 9.6 to 10). In these cases
you'd want to check the docker-compose.yml and then launch it by
yourself.
Today we don't have any method to get just the files that will be used
while installing via compose, without starting the containers. This
commit adds a variable named "compose_start_containers" (true by
default) that, if false, will make the playbook just generate the files
in the compose directory and not start the containers.
This commit updates all files that weren't passing yamllint for them to
pass.
A new yamllint target has been added. One can run `tox -e yamllint` or
`yamllint -s .` locally to ensure yaml files are still passing.
This check will be enabled in the CI so it can get on every new
contributions, and prevent merging non-compliant code.
Signed-off-by: Yanis Guenane <yguenane@redhat.com>
