ENH: Use same Python interpreter as ITK for wrapping tests
ENH: Use same Python interpreter as ITK for wrapping tests

The interpreter choice can now be changed (marked as advanced)
in the case where the wrong interpreter has been chosen.

Change-Id: I885c5aabb883e6c974864b58c122cfdfdb4b149f

InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples