Support filtering by group on forall and list subcmd
Enable operating against groups of repositories. As it stands, it isn't
compatible with `-r/--regex`.
`repo forall -g groupname -c pwd` will run `pwd` for all projects in
groupname.
`repo forall -g thisgroup,-butnotthisone -c pwd` will run `pwd` for all
projects in `thisgroup` but not `butnotthisone`.
`repo list -g groupname -n` will list all the names of repos in
`groupname`.
Change-Id: Ia75c50ce52541d1c8cea2874b20a4db2e0e54960
3 files changed