Mapping and Pole method changes for WW3DEV->MOM6 coupling

[alperaltuntas]

Description of changes

• Adds the new ww3->ocn export fields for SURFBANDS wave coupling method, i.e., the partitioned stokes drift components in x and y directions.
• Changes wav online mapping to bilnr_nstod. This only affects the new ww3dev code since the legacy ww3 code doesn't use online mapping.
• Sets the polemethod to NONE for all of the wave import/export fields and updates the mask for wav->ocn mapping. This is needed because the wave grid has triangles along the tripolar stitch, which triggers an ESMF error when POLEMETHOD_ALLAVG is used. This change also only affects the new ww3dev code since the legacy ww3 code doesn't use online mapping.

Specific notes

Contributors other than yourself, if any:

CMEPS Issues Fixed (include github issue #):

Are changes expected to change answers?

• bit for bit
• different at roundoff level
• more substantial

Any User Interface Changes (namelist or namelist defaults changes)?

• Yes
• No

Testing performed if application target is CESM:(either UFS-S2S or CESM testing is required):
All passing: (including baseline test)
SMS_Vnuopc.f09_g17.B1850.cheyenne_intel
SMS_Vnuopc.T62_g17.G1850ECO.cheyenne_intel
ERS_Vnuopc.TL319_g17.GIAF_JRA.cheyenne_gnu
ERS_Vnuopc.TL319_t061.GMOM_JRA_WD.cheyenne_gnu
SMS_Vnuopc.TL319_t061.GMOM_JRA.cheyenne_intel
ERS_Vnuopc.TL319_t061_wt061.GMOM_JRA_WD.cheyenne_gnu

Hashes used for testing:
cesm2_3_beta06

[DeniseWorthen]

Looks fine.

[mvertens]

@uturuncoglu @denise - thanks so much for your quick response.