Some arguments to register command ignored
The --limit and --docker-volumes arguments (and possibly others) seem to be ignored when running gitlab-ci-multi-runner register.
The following does not put a "limit" option in the generated config.toml:
gitlab-ci-multi-runner register --limit 1
However, this does:
RUNNER_LIMIT=1 gitlab-ci-multi-runner register
Likewise, this doesn't affect the volumes docker config option:
gitlab-ci-multi-runner register --executor docker --docker-volumes '/foo'
But this does:
DOCKER_VOLUMES=/foo gitlab-ci-multi-runner register --executor docker
As an additional note, setting DOCKER_VOLUMES appears to only be able to affect one item in the list - you can't specify multiple items, as far as I can tell. Which makes it not very helpful.
