Revert "Revert "Switch to grep test""
Revert "Revert "Switch to grep test""

This reverts commit 0c6569b5b99c6e415d17fafd46b740e1474b42b1.

jakirkham/staged-recipes,conda-forge/staged-recipes,ocefpaf/staged-recipes,jakirkham/staged-recipes,johanneskoester/staged-recipes,ocefpaf/staged-recipes,johanneskoester/staged-recipes,conda-forge/staged-recipes