Streamline management of sentry.gitlap.com

Sentry is exception monitoring tool used by engineers at GitLab. We run a private instance of this application at sentry.gitlap.com.

Currently there are only two people who can add or remove users from sentry.gitlap.com: @rspeicher and @jacobvosmaer-gitlab (me). This makes Robert and me a bottleneck in the onboarding and offboarding process. I did not look correctly, see @bjk-gitlab's comment below. Either way I think streamlining makes sense.

I can't speak for Robert but to me this does not make sense anymore given the current size and rate of hiring at GitLab.

Can we streamline this? Maybe we can give the required accounts and access levels in Sentry to people on our People Ops team?