Update global atmos upp job to use COMIN/COMOUT

[mingshichen-noaa]

Description

NCO has requested that each COM variable specify whether it is an input or an output. This completes that process for the global-workflow Unified Post Processor (UPP) task.

Refs NOAA-EMC#2451

Type of change

• Maintenance (code refactor, clean-up, new CI test, etc.)

Change characteristics

• Is this a breaking change (a change in existing functionality)? NO
• Does this change require a documentation update? NO

How has this been tested?

• Clone and build on RDHPCS
• Cycled tests on Hercules
• Forecast-only tests on Hercules

Checklist

• Any dependent changes have been merged and published
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• New and existing tests pass with my changes
• I have made corresponding changes to the documentation if necessary

[DavidHuber-NOAA]

FYI @aerorahul
@mingshichen-noaa Can you close this PR and reopen into NOAA-EMC/global-workflow?
@DavidHuber-NOAA Yes, I will close it and reopen it again.