Add Gerritbot to #zuul

Change-Id: I597f4ef7e5b45b3c8704f0ba6bb6b9bdb4d0cda4

accessbot/channels.yaml

@@ -246,3 +246,4 @@ channels:
     mask: full_mask
   - name: tripleo
   - name: wsme
+  - name: zuul

gerritbot/channels.yaml

@@ -2617,3 +2617,15 @@ wsme:
     - openstack/wsme
   branches:
     - master
+
+zuul:
+  events:
+    - patchset-created
+    - change-merged
+    - x-vrif-minus-2
+  projects:
+    - openstack-infra/nodepool
+    - openstack-infra/zuul
+  branches:
+    - master
+    - feature/zuulv3