sheriff-o: undo some hard-coded gae version hostnames.
sheriff-o: undo some hard-coded gae version hostnames.

BUG=

Review URL: https://codereview.chromium.org/1151623003

nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra