Remove old migrations in 15

changed milestone to %15.5

added Category:Database devopsdata stores groupdatabase sectioncore platform typemaintenance labels

@dfrazao-gitlab since you did the last one of these, would you consider how many merge requests it may take to implement this, add a comment enumerating them, and add the count as the issue weight? (Weighting it doesn't mean you have to do it)

For example:

Just one merge request to documentation

Would be accompanied by /weight 1

One to gitlab for database changes, one for new functionality, one for documentation changes, and one to omnibus

Would be accompanied by /weight 4

Thanks!

For the version 14 clean-up, we merged six merge requests. I would say a similar number.

@dfrazao-gitlab - Thanks! Could you also list what those 6 were for, just so that whoever picks this up has an idea of how we went about it before?

The two main goals are:

Squash regular/post migrations + delete tests (*)
Remove Background migrations classes + tests

(*) We have a lot of migrations in our codebase, so we will not be able to do this in just one MR.

added [deprecated] Accepting merge requests label

set weight to 6

added workflowready for development label

@jon_jenkins this might be a good thing for you to pick up next milestone. It's a bizzare bit of housekeeping that would help us clean up a bit of the code base and it's a good opportunity to pair up with @dfrazao-gitlab!