BUG: Fix consistency of TransformTest.ReadTransformResample

Switched to from default linear to explicit nearest neighborhood
interpolator to make hash consistent across platforms.

Change-Id: I67e5e4398301e0c902afe63eb61abb6efe6943b3
Merge topic 'UseNearestNeighborReadTransformTest' into next

5f3cb26 BUG: Fix consistency of TransformTest.ReadTransformResample