Need to update JHAFS_OCN_PREP before next HAFS operational upgrade

[BinLiu-NOAA]

Description

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In the operational version of JHAFS_OCN_PREP

export COMhafs=${COMhafs:-$(compath.py ${envir}/${NET}/${hafs_ver})/${RUN}.${PDY}/${cyc}}
export CONFhafs=$COMhafs/$stormlabel.conf
export HOLDVARS=${HOLDVARS:-$COMhafs/$stormlabel.holdvars.txt}

source ${HOLDVARS}

should be after:

source ${USHhafs}/hafs_runcmd.sh.inc

env

However, the ocn_prep job will fail on RDHPCS due to not be able to properly load the MOM6 ocn_prep needed modules.

Need to fix this issue before the next HAFS upgrade.