Update file paths for data moved into the $ISISTESTDATA area.#3991

Merged

krlberry merged 3 commits intoDOI-USGS:devfrom krlberry:move_test_data

Aug 28, 2020

+570-570

Commits on Aug 27, 2020

Update file paths for unit test-associated data which was moved into the /usgs/cpkgs/isis3/isis_testData area
krlberry
committed

Commits on Aug 28, 2020