Update Gerrit maintainers

Gal and Milutin have been elected as new Gerrit maintainers.

Removing Tao, as he's no longer working on Gerrit and has agreed to
retire as Gerrit maintainer.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: Idaae5ddfe616d209c29ecf0c2676239d3b11fc50
1 file changed