[Buildbot] #3185: Rewrite status_gerrit to use Data API

[Buildbot trac]

#3185: Rewrite status_gerrit to use Data API
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Reporter:  dustin  |       Owner:
    Type:  task    |      Status:  new
Priority:  major   |   Milestone:  0.9.0
 Version:  master  |  Resolution:
Keywords:          |
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Changes (by tardyp):

 * milestone:  0.9.0b1 => 0.9.0


Comment:

 pushing to 0.9.0 to not delay the beta1
 I'll write the patch before final release

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Ticket URL: <http://trac.buildbot.net/ticket/3185#comment:3>
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