Rename a bunch of jgdas/exgdas to jglobal/exglobal

[aerorahul]

Description

This PR:

• Resolves Rename ensemble jobs/scripts from "gdas" to "global" for EE2 #4241
• Renames the job and scripts as described in the issue.

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
• Does this change require an update to any of the following submodules? NO

How has this been tested?

Tested on GaeaC6 at:
/gpfs/f6/drsa-precip4/world-shared/Rahul.Mahajan/RUNTESTS/gw-4241

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
• I have documented my code, including function, input, and output descriptions
• My changes generate no new warnings
• New and existing tests pass with my changes
• This change is covered by an existing CI test or a new one has been added
• Any new scripts have been added to the .github/CODEOWNERS file with owners
• I have made corresponding changes to the system documentation if necessary

[RussTreadon-NOAA]

Looks straightforward. The real test is that g-w CI with these changes (a) runs without error and (b) generates identical output.

I don't think any of the g-w CI cases run the enkf in both the gfs and gdas cycles. Does GFS v17 run in this mode? If yes, can we run a lo-res GFS v17 test to confirm everything works as intended? If no, should we consider modifying an existing g-w CI test to cover this case?

Conditionally approve pending satisfactory results from g-w CI and, potentially, other tests.

[DavidHuber-NOAA]

@aerorahul It looks like a shellcheck from your previous PR (#4267) snuck through. Can you please address this warning:

https://github.com/NOAA-EMC/global-workflow/actions/runs/19902051456/job/57048361017?pr=4267#step:3:255

[aerorahul]

@aerorahul It looks like a shellcheck from your previous PR (#4267) snuck through. Can you please address this warning:

https://github.com/NOAA-EMC/global-workflow/actions/runs/19902051456/job/57048361017?pr=4267#step:3:255

done via fd0cd09

[DavidHuber-NOAA]

Merging based on successful tests performed by @aerorahul.