Join gerritbot to the satori IRC channel

We would like to start getting notices of satori changes in our IRC
channel `#openstack-satori`.  This change will enable that.

The following commands were issued in #openstack-satori
to allow bot access:

/msg chanserv access #openstack-satori add openstackinfra +AFRfiorstv
/msg chanserv access #openstack-satori add openstackgerrit +AFRfiorstv

Change-Id: Icc225b500cc975ba8a41ac82da3dd15eb50d6a5e
Merge "Join gerritbot to the satori IRC channel"