JEDI-based marine DA tasks

[guillaumevernieres]

Description
Add the JEDI based ocean and sea-ice DA (soca) tasks to the cycling application.

Acceptance Criteria (Definition of Done)

• A coupled forecast step (c48/5deg ocena/ice, see dependencies below) that dumps the appropriate backgrounds for the ocean and sea-ice DA.
• Addition of the following tasks (implemented in the GDASApp repo):
  • gdasocnanalprep:
    • stage backgrounds, obs and fixed DA files
    • generate yamls for JEDI executables (obs + 3DVAR FGAT)
  • gdasocnanalrun:
    • generate the DA grid
    • generate the static (but bkg dependent) B
    • run the JEDI VAR executable
    • prepare the ocean increment for MOM6
    • insert the sea-ice analysis in CICE restart
  • gdasocnanalpost:
    • not sure yet

Dependencies
Being able to run the coupled ocn-ice-atmos at c48/5deg within the cycling application. I might decide to sneak in the c48/5deg setup in the same feature branch ... TBD That work is mostly done, thanks to @DeniseWorthen for helping!