[Buildbot] #3545: set up uptimerobot.com

[Buildbot trac]

#3545: set up uptimerobot.com
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Reporter:  dustin       |      Owner:  dustin
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  sys - on-bb-infra
 Version:  0.8.12       |   Keywords:
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 https://uptimerobot.com/

 This will help us discover if our services are down in a timely fashion.

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Ticket URL: <http://trac.buildbot.net/ticket/3545>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation