Final Updates for HR2 (NOAA-EMC#1827)

This PR has the final updates for HR2.  There was one added variable for diagnostic output: 
`iopt_diag=3` and required from land team. This also points to HR2 updates for initial conditions
which update the land states in `sfc*` files compared to HR1. Lastly, it was determined that the
setting to enable running on hera `WRTTASK_PER_GROUP_PER_THREAD_PER_TILE_GFS=20`
actually will fail on WCOSS2. While not ideal, a setting that would run out of the box on both
hera and wcoss2 for C768 could not be found, therefore a comment was added noting WCOSS2
needs to use a different setting until it can be resolved.

Resolves NOAA-EMC#1500

parm/config/gfs/config.coupled_ic

@@ -21,7 +21,7 @@ case "${CASE}" in
     export CPL_WAVIC=GEFSwave20210528v2
     ;;
   "C768")
-    export CPL_ATMIC=HR1
+    export CPL_ATMIC=HR2
     export CPL_ICEIC=HR1
     export CPL_OCNIC=HR1
     export CPL_WAVIC=HR1

parm/config/gfs/config.ufs

@@ -171,7 +171,7 @@ case "${fv3_res}" in
         export WRITE_GROUP=2
         export WRTTASK_PER_GROUP_PER_THREAD_PER_TILE=10
         export WRITE_GROUP_GFS=4
-        export WRTTASK_PER_GROUP_PER_THREAD_PER_TILE_GFS=20
+        export WRTTASK_PER_GROUP_PER_THREAD_PER_TILE_GFS=20 #Note this should be 10 for WCOSS2
         ;;
     "C1152")
         export DELTIM=120

ush/parsing_namelists_FV3.sh

@@ -345,6 +345,7 @@ cat >> input.nml <<EOF
   iopt_tbot    = ${iopt_tbot:-"2"}
   iopt_stc     = ${iopt_stc:-"1"}
   iopt_trs     = ${iopt_trs:-"2"}
+  iopt_diag    = ${iopt_diag:-"3"}
   debug        = ${gfs_phys_debug:-".false."}
   nstf_name    = ${nstf_name}
   nst_anl      = ${nst_anl}