Testing improvements to enable ctsm system testing

Remove defunct FATES_WOOD_PRODUCT output

This output has been superseded now that FATES passes the harvest flux
to the host land model which tracks products pools there.

Fixes vegetation carbon canopy layer diagnostics

Remove unnecessary bc arguments

Minor cleanup tag

Add bc_out variables for HLM stock and flux calculations

This allows the HLMs to calculate NBP and TOTECOSYS

Fixes build issue brought in with the last tag

Seed localization for no competition

This update ensures that seeds will end up only on patches of the same
pft during the seed update

Fixes to unit testing

SPITFIRE refactor of mortality

Add the Johnson and Berry 2021 model of electron transport response t…

…o irradiance