STYLE: Apply kwstyle to Modules/Numerics tests

KWStyle was not checking tests. However, the git hook for KWStyle did
check tests if they were modified. This topic cleans itk tests and
reduces developer frustration when committing changes to test.

Change-Id: I9ee7a8ae16d45cc43faba69778bc2a1a3edf8056
Merge topic 'StyleForNumerics'

29c10a3 STYLE: Apply kwstyle to Modules/Numerics tests