Add feature to copy build[run].MACHINE.ver to build[run].ver

- Update sorc/link_workflow.sh to copy the machine-specific copy
of build.MACHINE.ver and run.MACHINE.ver into the versions
folder as build.ver and run.ver
- Add the copied build.ver and run.ver to .gitignore
- Remove sourcing of MACHINE.ver in ush/load_fv3gfs_modules.sh;
now just source run.ver copied by sorc/link_workflow.sh

Refs #671

.gitignore

@@ -143,3 +143,6 @@ ush/make_tif.sh
 ush/month_name.sh
 ush/imsfv3_scf2ioda.py
 ush/letkf_create_ens.py
+# version files
+versions/build.ver
+versions/run.ver

sorc/link_workflow.sh

@@ -52,6 +52,12 @@ source gfs_utils.fd/ush/detect_machine.sh  # (sets MACHINE_ID)
 # shellcheck disable=
 machine=$(echo "${MACHINE_ID}" | cut -d. -f1)
 
+#------------------------------
+#--Set up build.ver and run.ver
+#------------------------------
+cp "${top_dir}/versions/build.${machine}.ver" "${top_dir}/versions/build.ver"
+cp "${top_dir}/versions/run.${machine}.ver" "${top_dir}/versions/run.ver"
+
 #------------------------------
 #--model fix fields
 #------------------------------

ush/load_fv3gfs_modules.sh

@@ -20,19 +20,15 @@ module use "${HOMEgfs}/modulefiles"
 
 if [[ -d /lfs/f1 ]]; then
   # We are on WCOSS2 (Cactus or Dogwood)
-  source "${HOMEgfs}/versions/wcoss2.ver"
   module load module_base.wcoss2
 elif [[ -d /mnt/lfs1 ]] ; then
   # We are on NOAA Jet
-  source "${HOMEgfs}/versions/jet.ver"
   module load module_base.jet
 elif [[ -d /scratch1 ]] ; then
   # We are on NOAA Hera
-  source "${HOMEgfs}/versions/hera.ver"
   module load module_base.hera
 elif [[ -d /work ]] ; then
   # We are on MSU Orion
-  source "${HOMEgfs}/versions/orion.ver"
   module load module_base.orion
 elif [[ -d /glade ]] ; then
   # We are on NCAR Yellowstone
@@ -42,7 +38,6 @@ elif [[ -d /lustre && -d /ncrc ]] ; then
   module load module_base.gaea
 elif [[ -d /data/prod ]] ; then
   # We are on SSEC S4
-  source "${HOMEgfs}/versions/s4.ver"
   module load module_base.s4
 else
   echo WARNING: UNKNOWN PLATFORM