qa.gitlab-ci.yml

This also makes 'package-and-qa-manual' created for 'master' because
it's a valid use-case to run manual QA on 'master'.

Without this change, no pipeline could be created for auto-deploy
branches due to the following error:

    The form contains the following error:
    package-and-qa-manual: needs 'build-qa-image'

Signed-off-by: Rémy Coutable <remy@rymai.me>