TST: add stacklevel parameter to test calls to warnings.warn
TST: add stacklevel parameter to test calls to warnings.warn

For whatever reason the build system doesn't like the test calls
to warnings.warn with no stacklevel parameter inside the tests
that I moved.

endolith/numpy,madphysicist/numpy,simongibbons/numpy,rgommers/numpy,anntzer/numpy,anntzer/numpy,jakirkham/numpy,simongibbons/numpy,numpy/numpy,seberg/numpy,pbrod/numpy,numpy/numpy,pdebuyl/numpy,pbrod/numpy,madphysicist/numpy,endolith/numpy,seberg/numpy,pbrod/numpy,jakirkham/numpy,jakirkham/numpy,madphysicist/numpy,jakirkham/numpy,mhvk/numpy,seberg/numpy,pbrod/numpy,pbrod/numpy,anntzer/numpy,madphysicist/numpy,mattip/numpy,pdebuyl/numpy,mhvk/numpy,charris/numpy,charris/numpy,numpy/numpy,endolith/numpy,mattip/numpy,charris/numpy,pdebuyl/numpy,madphysicist/numpy,simongibbons/numpy,rgommers/numpy,mhvk/numpy,mhvk/numpy,seberg/numpy,mattip/numpy,rgommers/numpy,endolith/numpy,mattip/numpy,mhvk/numpy,rgommers/numpy,simongibbons/numpy,simongibbons/numpy,pdebuyl/numpy,anntzer/numpy,charris/numpy,jakirkham/numpy,numpy/numpy