Add global tags

It would be a lot more DRY not to have to repeat all the tags in every job if they are all the same. I suggest adding global tags array that would be of lower priority then job's tags array.

I think it's a nice idea. Let's move this issue to GitLab CE project since this is the place where jobs scheduling is done :)

moved from gitlab-runner#2798 (closed)

/cc @bikebilly

added CI/CD feature proposal labels

@bikebilly

It's problematic, as we use the context-specific keys in .gitlab-ci.yml if we introduce top-level tags: we might prevent some pipelines to be broken, as people might had tags: job.

So, we need to be careful in defining that. If we figure out what to do with that, then it is easy :)

Looking at data, at least 19 projects used tags: as a job name.

Solvable I think. Jobs are not arrays.