access: Trybot Access ("may-start-trybots") and approver access ("approvers") 

https://go-review.googlesource.com/#/admin/groups/1030,members
https://go-review.googlesource.com/#/admin/groups/1005,members

See https://golang.org/wiki/GerritAccess

I would like to have access to start trybots and to +2 CLs.

These would be helpful for work in x/builds.