[Buildbot] #3036: Install convenience packages with Ansible

[Buildbot trac]

#3036: Install convenience packages with Ansible
------------------------+-------------------------------
Reporter:  dustin       |      Owner:
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  sys - on-bb-infra
 Version:  0.8.9        |   Keywords:  ansible
------------------------+-------------------------------
 Helpful tools for administration, on the service hosts:
  * git
  * screen
  * bash
  * vim

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Ticket URL: <http://trac.buildbot.net/ticket/3036>
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Buildbot: build/test automation