Drydeposition working with FATES, ctsm side changes.

[rosiealice]

Description of changes

CTSM-side changes to make drydep work with FATES (to be coordinate with
NorESMhub/fates#9

Specific notes

Contributors other than yourself, if any:

CTSM Issues Fixed (include github issue #):

Are answers expected to change (and if so in what way)?

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

Does this create a need to change or add documentation? Did you do so?

Testing performed, if any:
(List what testing you did to show your changes worked as expected)
(This can be manual testing or running of the different test suites)
(Documentation on system testing is here: https://github.com/ESCOMP/ctsm/wiki/System-Testing-Guide)
(aux_clm on cheyenne for intel/gnu and izumi for intel/gnu/nag/pgi is the standard for tags on master)

NOTE: Be sure to check your coding style against the standard
(https://github.com/ESCOMP/ctsm/wiki/CTSM-coding-guidelines) and review
the list of common problems to watch out for
(https://github.com/ESCOMP/CTSM/wiki/List-of-common-problems).

[rosiealice]

Here is a mapping between the FATES, CLM and WESLEY PFTs
https://docs.google.com/spreadsheets/d/1XJioEp0_mZfVVcd1nlKF9AbP1O3huDv17A5zF1PBd78/edit?gid=0#gid=0

The Wesley definitions are (from Wesely_1989.pdf)

https://www.sciencedirect.com/science/article/abs/pii/S1352231007009740

Noting that more modern formulations do exist, e.g. https://acp.copernicus.org/articles/3/2067/2003/acp-3-2067-2003.pdf