Create new rocoto job script for fit2obs job

- Create fit2obs.sh.
- Script will run new jobs/JGDAS_FIT2OBS script.

Refs NOAA-EMC#1405, NOAA-EMC#1232

jobs/rocoto/fit2obs.sh

@@ -0,0 +1,23 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+echo
+echo "=============== START TO SOURCE FV3GFS WORKFLOW MODULES ==============="
+. ${HOMEgfs}/ush/load_fv3gfs_modules.sh
+status=$?
+[[ ${status} -ne 0 ]] && exit ${status}
+
+export job="fit2obs"
+export jobid="${job}.$$"
+
+###############################################################
+echo
+echo "=============== START TO RUN FIT2OBS ==============="
+# Execute the JJOB
+${HOMEgfs}/jobs/JGDAS_FIT2OBS
+status=$?
+[[ ${status} -ne 0 ]] && exit ${status}
+
+exit 0