[Buildbot] #3338: Apply slave environment to all remote commands

[Buildbot trac]

#3338: Apply slave environment to all remote commands
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Reporter:  ben.boeckel  |      Owner:
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  undecided
 Version:  0.8.10       |   Keywords:
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 Currently, only Shell commands do this, but a slave and/or builder may
 need to set environment variables to change the behavior of steps (such as
 GIT_SSL_NO_VERIFY due to *old* ssl libraries in our case) which doesn't
 belong in the step itself.

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Ticket URL: <http://trac.buildbot.net/ticket/3338>
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