[realms] Add Milo permissions
[realms] Add Milo permissions

R=9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org,iannucci@chromium.org

Bug: 1110314

Change-Id: I29c551b5abc476058aaea5b5d72d3b58a5bb24fd
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/2325350
Reviewed-by: Vadim Shtayura <9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org>
Commit-Queue: Weiwei Lin <968518a24f41fef00b747498600e52b792d06ae0@google.com>

luci/luci-py,luci/luci-py,luci/luci-py,luci/luci-py