Add uwsgi role to gerritbot
Add uwsgi role to gerritbot

While adding uwsgi role to projects, change to gerritbot wasn't made.
This patch aims to fix this so that gerritbot monitor repo and post
updates to the appropriate IRC channel.

Change-Id: I6213ea06669b24dbadaac67fa8761a793e7a01f6

openstack-infra/project-config,openstack-infra/project-config