Add shell scripts for compy with Gnu and OpenMPI

This is not a configuration supported by E3SM so we need to provide
the appropriate modules.

Author: xylar

mache/spack/templates/compy_gnu_openmpi.csh

@@ -0,0 +1,10 @@
+module load \
+    gcc/10.2.0 \
+    openmpi/4.0.1
+
+{%- if e3sm_hdf5_netcdf %}
+module load \
+    hdf5/1.10.5 \
+    netcdf/4.6.3 \
+    pnetcdf/1.9.0
+{%- endif %}

mache/spack/templates/compy_gnu_openmpi.sh

@@ -0,0 +1,10 @@
+module load \
+    gcc/10.2.0 \
+    openmpi/4.0.1
+
+{%- if e3sm_hdf5_netcdf %}
+module load \
+    hdf5/1.10.5 \
+    netcdf/4.6.3 \
+    pnetcdf/1.9.0
+{%- endif %}