Write out namelist parameters at initialization using generated namelist read code

[jimmielin]

What is the feature/what would you like to discuss?

This issue arose during updates to ZM in Hack shallow convection CCPPization: ESCOMP/atmospheric_physics#195

@cacraigucar wrote:

Should these writes become part of the namelist generated code (a future issue)? It feels like it is too easy for the informational writes to get out-of-sync with the namelist generated code. As for the missing fields, it makes sense to have the namelist variables written out.

Is there anyone in particular you want to be part of this conversation?

@cacraigucar @nusbaume @peverwhee

Will this change (regression test) answers?

No

Will you be implementing this enhancement yourself?

Any Software Engineer can do this