[Buildbot] #2817: install moto+boto on metabuildbot

[Buildbot trac]

#2817: install moto+boto on metabuildbot
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Reporter:  dustin   |      Owner:  dustin
    Type:  task     |     Status:  new
Priority:  major    |  Milestone:  systems
 Version:  0.8.7p1  |   Keywords:
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 master/buildbot/test/unit/test_buildslave_ec2.py will use these tools to
 better test the EC2 support if it's installed.

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Ticket URL: <http://trac.buildbot.net/ticket/2817>
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Buildbot: build/test automation