Error trying to build unit tests on hobart

[billsacks]

Pointing to my branch from #1343 , I tried running this on hobart:

tools/unit_testing/run_tests.py --build-dir `mktemp -d --tmpdir=. unit_tests.XXXXXXXX`

and got this error message:

CMake Error at unit_tests.51Nwz7QH/__command_line_test__/__command_line_test__/Macros.cmake:189 (execute_process):
  Syntax error in cmake code at

    /home/sacks/cime/unit_tests.51Nwz7QH/__command_line_test__/__command_line_test__/Macros.cmake:189

  when parsing string

    ${NETCDF_PATH

  syntax error, unexpected $end, expecting } (13)
Call Stack (most recent call first):
  src/externals/CMake/CIME_utils.cmake:33 (include)
  CMakeLists.txt:12 (include)

This is pointing to this line in Macros.cmake:

execute_process(COMMAND ${NETCDF_PATH OUTPUT_VARIABLE CIME_TEMP_SHELL0 OUTPUT_STRIP_TRAILING_WHITESPACE)

which I see is missing an ending }