Updates to detect_machine.sh needed after the UFSWM updated the return value

[HenryRWinterbottom]

What is wrong?

GSI has a copy of detect_machine.sh. This was copied from UFSWM to maintain consistency. The UFSWM has updated and removed the COMPILER add-on to the variable MACHINE_ID for all platforms.

What should have happened?

A consistent return of use of detect_machine.sh should return the name of the machine w/o COMPILER add-on.

What machines are impacted?

All or N/A

Steps to reproduce

None

Additional information

None

Do you have a proposed solution?

Copy detect_machine.sh from ufs-weather-model to GSI.
https://github.com/ufs-community/ufs-weather-model/blob/develop/tests/detect_machine.sh