Fix rocoto forecast hour determination for GEFS (NOAA-EMC#2351)

The function that generates the list of forecast hours for rocoto was
trying to use variables that are not defined for GEFS, causing workflow
generation to fail. The function is updated to not try to load these
variables before loading the ones actually used for GFS/ GEFS.

Also turns GEFS CI test back on and adds an entry to stage C192 ICs
(note: these have not been placed in the centralized location.)

ci/cases/pr/C48_S2SWA_gefs.yaml

@@ -16,8 +16,3 @@ arguments:
   idate: 2021032312
   edate: 2021032312
   yaml: {{ HOMEgfs }}/ci/cases/yamls/gefs_ci_defaults.yaml
-
-skip_ci_on_hosts:
-  - hera
-  - orion
-  - hercules

parm/config/gfs/config.stage_ic

@@ -8,7 +8,7 @@ echo "BEGIN: config.stage_ic"
 source "${EXPDIR}/config.resources" stage_ic
 
 case "${CASE}" in
-  "C48" | "C96")
+  "C48" | "C96" | "C192")
     export CPL_ATMIC="workflow_${CASE}_refactored"
     export CPL_ICEIC="workflow_${CASE}_refactored"
     export CPL_OCNIC="workflow_${CASE}_refactored"

workflow/rocoto/tasks.py

@@ -132,12 +132,12 @@ def _get_forecast_hours(cdump, config, component='atmos') -> List[str]:
             local_config['FHOUT'] = config['FHOUT_OCNICE']
 
         fhmin = local_config['FHMIN']
-        fhmax = local_config['FHMAX']
-        fhout = local_config['FHOUT']
 
         # Get a list of all forecast hours
         fhrs = []
         if cdump in ['gdas']:
+            fhmax = local_config['FHMAX']
+            fhout = local_config['FHOUT']
             fhrs = list(range(fhmin, fhmax + fhout, fhout))
         elif cdump in ['gfs', 'gefs']:
             fhmax = local_config['FHMAX_GFS']