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.