These changes accommodate a JSON format to the FATES parameter file.

Documentation has been updated in the FATES User's Guide:
https://fates-users-guide.readthedocs.io/en/latest/user/Parameter-File.html

fates was updated from sci.1.88.0_api.42.0.0 to sci.1.89.0_api.43.0.0

ESCOMP and NGEET PRs:
https://github.com/ESCOMP/ctsm/pull/3570
https://github.com/NGEET/fates/pull/1493