Select regex assertion based on python version.
Select regex assertion based on python version.

Adds a branch in the regex assertion test of hypot warnings to
select the asserting regex based test function depending on python
version (the name changed between 2 and 3).

sklam/numba,stefanseefeld/numba,gmarkall/numba,stonebig/numba,cpcloud/numba,numba/numba,jriehl/numba,sklam/numba,cpcloud/numba,IntelLabs/numba,stuartarchibald/numba,numba/numba,stefanseefeld/numba,jriehl/numba,numba/numba,jriehl/numba,IntelLabs/numba,IntelLabs/numba,seibert/numba,seibert/numba,numba/numba,gmarkall/numba,seibert/numba,sklam/numba,gmarkall/numba,gmarkall/numba,stonebig/numba,cpcloud/numba,stuartarchibald/numba,numba/numba,stefanseefeld/numba,IntelLabs/numba,stonebig/numba,stefanseefeld/numba,seibert/numba,gmarkall/numba,cpcloud/numba,seibert/numba,sklam/numba,stonebig/numba,IntelLabs/numba,jriehl/numba,stuartarchibald/numba,stuartarchibald/numba,sklam/numba,stefanseefeld/numba,stonebig/numba,cpcloud/numba,stuartarchibald/numba,jriehl/numba