Drop unneeded test.
Hoist stormConf and context up into base fixture.
Reversing region server ordering in base fixture is no longer needed.
Drop sublte (ordering-based) restriction on NUM_REGIONS.
Rename some fixture factory methods, dropping 'get' prefix.
Drop superfluous setters.

We don't actually want anyone calling these, and the uses are shorter than the definitions.
Extract consider() call.
Mark result fixture members private.

Going to start tweaking this, to prep for multiple regions per task.
Inline members.
Drop unused method.
Inline some initializations.