Update GPU regression tests with new workflow

[sjsprecious]

What is the feature/what would you like to discuss?

As discussed in ESMCI/cime#4687, it is better remove the GPU options from the Python workflow in CIME and use XML files instead to configure a GPU test for CESM.

The following tags should be brought into CAM together to make the new GPU workflow function properly:

• cmeps1.0.22
• ccs_config_cesm1.0.8
• cime6.1.33

Once those new tags are merged in, the GPU test definition here (https://github.com/ESCOMP/CAM/blob/cam_development/cime_config/testdefs/testlist_cam.xml#L1493-L1510) needs to be updated accordingly.

Is there anyone in particular you want to be part of this conversation?

No response

Will this change (regression test) answers?

No

Will you be implementing this enhancement yourself?

Yes