Return all gaea head nodes to the building rotation

[DavidHuber-NOAA]

Description

This removes excluded nodes from GAEAC6 configuration.

Type of change

• Bug fix (fixes something broken)
• New feature (adds functionality)
• Maintenance (code refactor, clean-up, new CI test, etc.)

Change characteristics

• Is this change expected to change outputs NO
• 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?

Ran test GDASApp, GFS, SFS, GEFS, and GCAFS builds on gaea61,5,7.

Checklist

• 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
• 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

[DavidHuber-NOAA]

FYI @RussTreadon-NOAA GFDL has informed us that all head noes are again usable for building.

[TravisElless-NOAA]

Looks good to me