Move role repo discovery to a script to avoid shell escaping issues.
* Fix up argument_specs.yml.
Signed-off-by: prombot <prometheus-team@googlegroups.com>
Allow long lines in the arguments_spec to avoid line wrapping. This
allows the files to be processed with `yq` without constant diffs and
errors.
Signed-off-by: prombot <prometheus-team@googlegroups.com>