Add support for services configuration in .gitlab-ci.yml
What does this MR do?
Adds support for more detailed configuration of services in
.gitlab-ci.yml file (for example - to have a possibility to use two services from the same image but with a different alias). This is one of two parts to make gitlab-org/gitlab-ci-multi-runner#1466 done - the second part will be to add support for changed API in the Runner.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
- Changelog entry added
- Documentation created/updated
- API support added
- Added for this feature/bug
- All builds are passing
- Conform by the merge request performance guides
- Conform by the style guides
Branch has no merge conflicts with
master(if it does - rebase it please)
- Squashed related commits together