Minor fix to rt.sh.

Fixes ufs-community#559.

reg_tests/rt.sh

@@ -127,7 +127,7 @@ for dir in ice_blend; do
     elif [[ $target == "wcoss_dell_p3" ]] || [[ $target == "wcoss_cray" ]]; then
         cat ./driver.$target.sh | bsub -P ${PROJECT_CODE}
     elif [[ $target == "wcoss2" ]] ; then
-        qsub ./driver.$target.sh
+        qsub -v WORK_DIR ./driver.$target.sh
     fi
 
     # Wait for job to complete