Test plan for Sentry Integration testing
From !24681 (merged) we have started to pull projects from Sentry.
@smcgivern has brought up a good point that we should start looking into full integration tests.
@rpereira2 @splattael one thing that I think would be cool in general, here, is to have gitlab-qa tests that also set up a Sentry instance and so can do a full integration test. @meks have the Quality team helped set up similar external services before?