UFSATM changes for ccpp framework update

[dustinswales]

Description

Host-side changes to accommodate CCPP Framework updates.

• Replace scalars in metadata dimensions with variables (e.g. 0:number_layers-> constant_zero:number_layers)
• Provide complete metadata declarations for variables (e.g phy_f2d and phy_f3d in GFS_typedefs.F90)
• Create/destroy interstitial fields within run step.

Issue(s) addressed

#1005 @climbfuji

Testing

Tested on URSA with GNU and Intel.
All tests pass.

[gspetro-NOAA]

Could we get reviews on this PR so that we can begin processing its parent WM PR #2881 next?

[climbfuji]

Could we get reviews on this PR so that we can begin processing its parent WM PR #2881 next?

@dustinswales is currently not available, we'll need him to address the merge conflicts and any reviewer comments.

[grantfirl]

Could we get reviews on this PR so that we can begin processing its parent WM PR #2881 next?

@dustinswales is currently not available, we'll need him to address the merge conflicts and any reviewer comments.

I have push privileges on @dustinswales 's fork, so I addressed the merge conflicts when updating to the latest develop. If there are reviewer comments, I may be able to help with those too, depending on the comments.

[gspetro-NOAA]

@grantfirl Great! At the moment, there aren't any reviewer comments, but there also aren't any reviews. ;)

[climbfuji]

Most of these changes are from a corresponding PR for NEPTUNE, all good.

[rhaesung]

@grantfirl @dustinswales ufs-community/ccpp-physics#311 has been merged. Please update the submodule pointer for ccpp-physics (ufs-community/ccpp-physics@6382d61) and revert .gitmodules file.

[grantfirl]

@grantfirl @dustinswales ufs-community/ccpp-physics#311 has been merged. Please update the submodule pointer for ccpp-physics (ufs-community/ccpp-physics@6382d61) and revert .gitmodules file.

Finished. Ready for final review/merge.