Fix ugwpv1 timing / remove some extended WLCLK cases

[dpsarmie]

Commit Queue Requirements:

• Fill out all sections of this template.
• All sub component pull requests have been reviewed by their code managers.
• Run the full Intel+GNU RT suite (compared to current baselines) on either Hera/Derecho/Hercules
• Commit 'test_changes.list' from previous step

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Description:

This PR will fix an issue with the export_ugwpv1() function in default_vars.sh. The sedi_semi check was inverted. This should now align with the GW spec.
Changing this timestep also required some changes in the K_SPILT and N_SPLIT variables for select regression tests.
These fixes also reduced the runtime of some regression tests. Those tests had the custom changes to WLCLK removed since they are running under the 30 min limit.
A new namelist variable was also added (XR_CNVCLD) to more closely align with the GW namelist needs.

Commit Message:

* UFSWM - Fix sedi_semi logic issue in export_ugwpv1() and change affected RTs for more stable and quicker runtimes.

Priority:

• Normal

Git Tracking

UFSWM:

• Closes SEDI_SEMI incorrectly halves DT_ATMOS in tests/default_vars.sh #2496

Sub component Pull Requests:

• None

UFSWM Blocking Dependencies:

• None

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Changes

Regression Test Changes (Please commit test_changes.list):

• PR Updates/Changes Baselines.

Input data Changes:

• None.

Library Changes/Upgrades:

• No Updates

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Testing Log:

• RDHPCS
  • Hera
  • Orion
  • Hercules
  • Jet
  • Gaea
  • Derecho
• WCOSS2
  • Dogwood/Cactus
  • Acorn
• CI
• opnReqTest (complete task if unnecessary)

[NickSzapiro-NOAA]

I think DT_ATMOS stays the same and DT_INNER changes:
if [[ ${SEDI_SEMI} = .false. ]]; then export DT_INNER=$((DT_ATMOS/2)); fi

dt_inner in ccpp is for subcycling in the Thompson MP scheme

[NickSzapiro-NOAA]

I think SEDI_SEMI=.true. for all RTs that get here so there's no need to re-test anything you've done

[dpsarmie]

You're right, got it fixed and it doesn't affect any of the RTs. Leaving the check in even if it doesn't get triggered for GW fidelity and reference.