refactor: change default brach references to main
What does this MR do?
Change all reference to this repository from master to main
Why was this MR needed?
In gitlab-org/gitlab-runner#27239 (closed) the
the default branch is going to change from master to main.
Update .gitlab-ci.yml to use rules since it's easier to use the
default branch. Enable pipeline for merge requests for all jobs to
prevent 2 pipelines from being created 1 for the branch and 1 for the
merge request.
What are the relevant issue numbers?
Edited by Tomasz Maczukin