This tag updates the default parameter file for FATES bringing in a
number of updates:
   - adds parameters for land use grazing
   - updates the FATES z0mr turbulence parameters for consistency with
     CLM
   - adds FATES pft-dependent btran model switches for a forthcoming
     update
   - updates the default hydro solver switch to Picard 2D

This also updates the default FATES tag which includes two issue fixes
and introduces
the aforementioned land use grazing capability.