[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2625: add unit tests for configutil

[Tahoe-LAFS]

#2625: add unit tests for configutil
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 Reporter:  daira         |          Owner:  daira
     Type:  defect        |         Status:  new
 Priority:  normal        |      Milestone:  undecided
Component:  code          |        Version:  unknown
 Keywords:  tests config  |  Launchpad Bug:
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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2625>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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