Some python files have python2 type style statements

I found this running the python reformatter "black" on all of CTSM telling it to target python-3.7 and it pointed out the following files have python 2 type print statements so wouldn't work with python-3. Fixing it would be simple just changing lines
with

print "thing"

to

print( "thing" )

so the fix is straight-forward.

components/cism/source_cism/tests/dome/netCDF.py:
components/cism/source_cism/tests/halfar/halfar_results.py:
components/cism/source_cism/tests/halfar/netCDF.py:
components/cism/source_cism/tests/ismip-hom/netCDF.py:
components/cism/source_cism/tests/ismip-hom/plotISMIP_HOM.py:
components/cism/source_cism/tests/MISMIP3d/mismip3d.code/mismip3dRun.py:
components/cism/source_cism/tests/MISMIP3d/mismip3d.code/mismip3dSetup.py:
components/cism/source_cism/tests/MISMIP3d/mismip3d.code/mismip3dWriteGL.py:
components/cism/source_cism/tests/MISMIP/mismip.code/mismipPlotGL.py:
components/cism/source_cism/tests/MISMIP/mismip.code/mismipRun.py:
components/cism/source_cism/tests/MISMIP/mismip.code/mismipSetup.py:
components/cism/source_cism/tests/MISMIP/mismip.code/mismipWriteGL.py:
components/cism/source_cism/tests/MISOMIP/mismip+/mismip+Run.py:
components/cism/source_cism/tests/MISOMIP/mismip+/mismip+Setup.py:
components/cism/source_cism/tests/MISOMIP/mismip+/mismip+WriteGL.py:
components/cism/source_cism/tests/netCDF.py:
components/cism/source_cism/tests/new/netCDF.py:
components/cism/source_cism/tests/ross/netCDF.py:
components/cism/source_cism/tests/ross/plotRoss.py:
components/cism/source_cism/tests/shelf/netCDF.py:
components/cism/source_cism/tests/slab/netCDF.py:
components/cism/source_cism/tests/slab/plotSlab.py:
components/cism/source_cism/tests/stream/netCDF.py:
components/cism/source_cism/tests/unsupported/exact-isothermal/scripts/create_test.py:
components/cism/source_cism/tests/unsupported/exact-isothermal/scripts/plot_verif.py:
components/cism/source_cism/tests/unsupported/exact-isothermal/scripts/run_verif.py:
components/cism/source_cism/tests/viewNetCDF.py:
components/cism/source_cism/utils/f90_dependency_tool/f90_dependencies.py: