Bug 1421062: Enable production signing on comm-* branches; r=aki a=Aryx

Differential Revision: https://phabricator.services.mozilla.com/D904

--HG--
extra : rebase_source : cbe6acaa43118fad716ae2079d5c21eac3469935
extra : amend_source : f64cbcddb4f8fb4ff339cf49cc5cf0dd608601b7

taskcluster/taskgraph/util/scriptworker.py

@@ -40,11 +40,13 @@ This is a list of list-pairs, for ordering.
 SIGNING_SCOPE_ALIAS_TO_PROJECT = [[
     'all-nightly-branches', set([
         'mozilla-central',
+        'comm-central',
     ])
 ], [
     'all-release-branches', set([
         'mozilla-beta',
         'mozilla-release',
+        'comm-beta',
     ])
 ]]