[Buildbot] #3304: Github hook can't be set to True in nine

[Buildbot trac]

#3304: Github hook can't be set to True in nine
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Reporter:  parmegv  |      Owner:
    Type:  defect   |     Status:  new
Priority:  minor    |  Milestone:  undecided
 Version:  master   |   Keywords:  docs hook
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 processing changes from web hook
         Traceback (most recent call last):

         Failure: exceptions.AttributeError: 'bool' object has no attribute
 'get'

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Ticket URL: <http://trac.buildbot.net/ticket/3304>
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