Add CABLE option cable_user%L_REV_CORR to all configurations

[ccarouge]

To improve on the energy balance, we need to have the following option in cable.nml:

cable_user%L_REV_CORR = .True.

This option was introduced for work on ACCESS-CM2 to improve the energy balance and should be in used for ACCESS models based on CABLE3.

The option should be set in all configurations.

[ccarouge]

@har917 Can you check the issue above and make sure I understood the conversation here correctly? Is that so we need the L_REV_CORR option on in all ESM1.6 configurations.

From what I can see, I think Jhan added it to his running configuration but not to the shared configurations in this repository.

[har917]

@ccarouge Hopefully for clarity:

• offline runs do NOT need the correction terms - l_rev_corr shouldn't make a difference because all usage should be inside a cable_runtime%um_implicit like condition [but this itself is confused]
• ESM1.5 effectively has l_rev_corr = .FALSE.
• all future coupled configurations should have l_rev_corr = .TRUE. by default [unless someone really wants to go backwards].

Whether the route to ensure the switch takes a TRUE value is via the standard configuration (namelist) or hard-wired into the code somehow is down to NRI preference.

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In the longer term we should either

1. work to remove the switch from the code base entirely (it was only implemented this way to allow for backwards compatibility]
2. (my preference) remove the correction terms from the codebase entirely (they're a blocker for SLI)