[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2278: make our custom BuildSteps be new-style

[Tahoe-LAFS]

#2278: make our custom BuildSteps be new-style
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     Reporter:  zooko               |      Owner:
         Type:  task                |     Status:  new
     Priority:  normal              |  Milestone:  undecided
    Component:  dev-infrastructure  |    Version:  1.10.0
   Resolution:                      |   Keywords:  buildbot
Launchpad Bug:                      |
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Changes (by daira):

 * type:  enhancement => task


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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2278#comment:1>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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