Regional defaults w/ CROCODILE

[manishvenu]

Details:
Closes CROCODILE-CESM#5. Regional Specific Changes.

Changes:

1. A XML Variable for Regional Mode called MOM6_DOMAIN_TYPE that can be changed with XML change
2. A variety of changes from Gustavo's MOM_input into MOM_input.yaml using MOM6_DOMAIN_TYPE
3. Small changes to input.nml for MARBL MOM6 Regional Runs

There are a few variables like GUST_CONST, ADJUST_NET_FRESH_WATER_TO_ZERO, etc that are different from Gustavo's changes, but it is not clear why.

[manishvenu]

@mnlevy1981 MOM_interface changes for tag