Add mechanism for turning on daily output in test suite

[mnlevy1981]

The defaultio test in CESM writes daily history files for CAM, CICE, CISM, CLM, MOSART, POP, and RTM. It would be nice to have an ability to adjust the MOM diag_table for this test.

I proposed to @jedwards4b that we could add a DAILY_OUTPUT variable to env_test.xml (default=FALSE), and when DAILY_OUTPUT=TRUE ParamGen would modify the diag table accordingly, but I am open to other methods of getting daily MOM output into the test suite.

[alperaltuntas]

@mnlevy1981 Is this issue still relevant?

[jedwards4b]

@alperaltuntas yes I think that it is. Case /glade/derecho/scratch/jedwards/PFS.ne30pg3_t232.BLT1850.derecho_intel.allactive-defaultio.20241226_071515_19nl23 has daily output for all components except MOM.

[jedwards4b]

I'm not sure that there is a need to do this with an additional XML variable - what exactly are the changes that need to happen in diag_table and why couldn't it be done with a testmod as in other components?