[Buildbot] #3488: drop python 2.6 support

[Buildbot trac]

#3488: drop python 2.6 support
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Reporter:  tardyp       |       Owner:
    Type:  enhancement  |      Status:  new
Priority:  major        |   Milestone:  0.9.0
 Version:  master       |  Resolution:
Keywords:               |
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Comment (by stibbons):

 Buildbot should drop Python 2.6 support. Life should go on, users will
 happily upgrade their system.

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Ticket URL: <http://trac.buildbot.net/ticket/3488#comment:5>
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Buildbot: build/test automation