[shipit] Add try as a possible branch for staging releases. (#1475)
[shipit] Add try as a possible branch for staging releases. (#1475)


lundjordan/services,lundjordan/services,La0/mozilla-relengapi,mozilla-releng/services,mozilla-releng/services,La0/mozilla-relengapi,lundjordan/services,La0/mozilla-relengapi,lundjordan/services,mozilla-releng/services,mozilla-releng/services,La0/mozilla-relengapi