[Buildbot] #2965: measure coverage with coveralls.io

[Buildbot trac]

#2965: measure coverage with coveralls.io
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Reporter:  dustin  |      Owner:
    Type:  task    |     Status:  new
Priority:  major   |  Milestone:  sys - metabuildbot
 Version:  0.8.9   |   Keywords:
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 https://coveralls.io/

 "Coveralls works with your continuous integration server to give you test
 coverage history and statistics. Free for open source, pro accounts for
 private repos, instant sign up with GitHub OAuth."

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Ticket URL: <http://trac.buildbot.net/ticket/2965>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation