Tests refactoring to reuse testplanet instance between some
of tests. This should decrease resources needed to run those
tests.
Change-Id: I98f3041ec23085d3903b19acd339904973319ec1
We already split main code base, now we need to split test
to reflect new files structure (bucket/object/segment/other).
Fixes https://github.com/storj/team-metainfo/issues/12
Change-Id: Ica1054c4fc7df764483b03f204b4beba094df8e1