adapt to new bcs structure

[weiyuan-jiang]

For this PR, the input file's BCS_PATH should just include the bc version like:

1. BCS_PATH: /discover/nobackup/projects/gmao/bcs_shared/fvInput/ExtData/esm/tiles/NL3/
2. And the resolution should not have prefix 'SMAP_' (Issue EASE grid name change #673 )
3. Needs GEOS_Util's Assorted enhancements of remap_restarts.py package (EASE, SLES15, NAS, lake/landice log) GEOS_Util#43

@mathomp4 : A heads-up, we will need to update the GEOSldas nightly tests after merging this PR to accommodate the new bcs dir structure.

[biljanaorescanin]

With GEOS_Util branch feature/wjiang/command_line and two more changes in input files all nightly tests passed.
Changes needed in the input files of the Nightly Tests:

1. BCS_PATH has to be updated in all *.exec scripts to new layout path.
2. For assim tests we need to change directory name where we search for mwrtm_path.
   We need to drop SMAP from SMAP_EASEv2_M09
   (*/LDAS_Restarts/NGHTLY_TST_TV4000/SMAP_EASEv2_M09 needs to become */LDAS_Restarts/NGHTLY_TST_TV4000/EASEv2_M09)

[weiyuan-jiang]

With GEOS_Util branch feature/wjiang/command_line and two more changes in input files all nightly tests passed. Changes needed in the input files of the Nightly Tests:

1. BCS_PATH has to be updated in all *.exec scripts to new layout path.
2. For assim tests we need to change directory name where we search for mwrtm_path.
   We need to drop SMAP from SMAP_EASEv2_M09
   (*/LDAS_Restarts/NGHTLY_TST_TV4000/SMAP_EASEv2_M09 needs to become */LDAS_Restarts/NGHTLY_TST_TV4000/EASEv2_M09)

Is mwRTM_param.nc4 file included in BCS ?

[biljanaorescanin]

With GEOS_Util branch feature/wjiang/command_line and two more changes in input files all nightly tests passed. Changes needed in the input files of the Nightly Tests:

1. BCS_PATH has to be updated in all *.exec scripts to new layout path.
2. For assim tests we need to change directory name where we search for mwrtm_path.
   We need to drop SMAP from SMAP_EASEv2_M09
   (*/LDAS_Restarts/NGHTLY_TST_TV4000/SMAP_EASEv2_M09 needs to become */LDAS_Restarts/NGHTLY_TST_TV4000/EASEv2_M09)

Is mwRTM_param.nc4 file included in BCS ?

Nope, it is in area I gave path to in upper comment. Currently its here: */LDAS_Restarts/NGHTLY_TST_TV4000/SMAP_EASEv2_M09/mwRTM_param.nc4

[weiyuan-jiang]

This PR should work with this GEOS_Util branch