Add gerribot to #openstack-tc

This commit adds the necessary gerritbot config to have irc messsages in
the #openstack-tc for openstack/governance and
openstack/project-team-guide changes.

Change-Id: I50ca5c81b9920badd320a07596296030023c6460

gerritbot/channels.yaml

@@ -2412,6 +2412,17 @@ openstack-swift:
     - feature/hummingbird
     - feature/repconn
 
+openstack-tc:
+  events:
+    - patchset-created
+    - change-merged
+    - x-vrif-minus-2
+  projects:
+    - openstack/governance
+    - openstack/project-team-guide
+  branches:
+    - master
+
 openstack-telemetry:
   events:
     - patchset-created