Separate CCPP schemes cannot share namelist groups

[jimmielin]

What happened?

Trying to set up namelist xml for two separate schemes where <group> is the same for these two schemes will result in a build time error.

What are the steps to reproduce the bug?

Create two CCPP schemes and corresponding scheme1_namelist.xml scheme2_namelist.xml files

Create two different namelist entries in these two xml files, but with the same <group> (e.g., <group>fruit_nl</group>)

Try to build

Error will be similar to

atm_in_paramgen.AtmInParamGenError: Cannot append:
'/home/hplin/2411_sima_check-energy/CAM-SIMA.rebase/src/physics/ncar_ccpp/schemes/check_energy/check_energy_chng_namelist.xml'
 The following namelist groups conflict with those in
'/home/hplin/2411_sima_check-energy/CAM-SIMA.rebase/src/physics/ncar_ccpp/schemes/sima_diagnostics/check_energy_gmean_diagnostics_namelist.xml :'
check_energy_nl

What CAM-SIMA hash were you using?

623ef7b

What machine were you running CAM-SIMA on?

CGD machine (e.g. izumi)

What compiler were you using?

GNU

Path to a case directory, if applicable

No response

Will you be addressing this bug yourself?

Any Software Engineer can do this

Extra info

No response