[Buildbot] #3282: use supybot better

[Buildbot trac]

#3282: use supybot better
------------------------+-------------------------
Reporter:  dustin       |      Owner:
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  sys - other
 Version:  0.8.10       |   Keywords:
------------------------+-------------------------
 * configure supybot to not try to modify its config from irc
  * configure an "admin" user in supybot with a password in the ansible
 vault
  * add channel logging
  * anything else that seems cool

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Ticket URL: <http://trac.buildbot.net/ticket/3282>
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