Feature/mynn sfc submodule

[XiaSun-Atmos]

Description

Added feature: MYNN surface layer scheme submodule
No change of answers are expected from this PR

Issue(s) addressed

• fixes #<issue_number>

Testing

Full rt test is running now on Ursa
The code updates change will not change regression test baseline.

Dependencies

• waiting on Feature/mynn sfc submodule ufs-community/ccpp-physics#345

[gspetro-NOAA]

Could we get approvals on this PR in order to process WM PR 3052?

[gspetro-NOAA]

@grantfirl We're about ready to start processing WM PR 3052. Could we get your approval here on the UFSATM sub-PR?

[gspetro-NOAA]

Testing for ufs-community/ufs-weather-model#3052 has completed successfully. However, we need another approval on this PR before we can move forward. (Also waiting for CCPP merge, which should be imminent.)

[grantfirl]

@gspetro-NOAA @XiaSun-Atmos ufs-community/ccpp-physics#345 has been merged.

[grantfirl]

Looks good from a CCPP point of view.

[gspetro-NOAA]

@XiaSun-Atmos Please revert .gitmodules and update the ccpp-physics hash to fa51a56.

[XiaSun-Atmos]

@XiaSun-Atmos Please revert .gitmodules and update the ccpp-physics hash to fa51a56.

@gspetro-NOAA @grantfirl Dones. Please let me know if anything else needs to be changed. Thanks.

[gspetro-NOAA]

This PR can be merged.