[WIP] Use `cime_env` on Cori (part 2) (!15) · Merge requests · Mametjanov, Azamat / E3SM_test_scripts

Created by: jhkennedy

This reverts E3SM-Project/E3SM_test_scripts#14 so that tests on Cori use cime_env by default again.

This is marked WIP and should only be merged once the python 3 fixes are in for the maint. branch of E3SM.

[WIP] Use `cime_env` on Cori (part 2)