[Buildbot] #3445: add test configuration that runs random subset of tests in random order

[Buildbot trac]

#3445: add test configuration that runs random subset of tests in random order
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Reporter:  rutsky     |       Owner:
    Type:  undecided  |      Status:  assigned
Priority:  major      |   Milestone:  0.9.+
 Version:  master     |  Resolution:
Keywords:  simple     |
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Comment (by dustin):

 aditya97: this bug isn't specifically about the `Row._next_id`.  Rather,
 it's about the order that the tests run.  I think there's an option to
 `trial` to make this happen.

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Ticket URL: <http://trac.buildbot.net/ticket/3445#comment:3>
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