Add 'Abandon' permission for retired repo ACL
This will help TC members to abandon the open reviews
for retire repos.
@@ -3,6 +3,7 @@ exclusiveGroupPermissions = push
push = group tech-committee
[access "refs/heads/*"]
+abandon = group tech-committee
label-Code-Review = -2..+2 group tech-committee
label-Verified = -2..+2 group tech-committee
label-Workflow = -1..+1 group tech-committee
