Define CO9_AMM15 reference simulation.

[jpolton]

CO9_AMM15 is a reference simulation. It must be reproducible. The forcing must be obtainable.

Operational implementations can use alternative forcing, namelists, couplings, DA, etc.

Acceptance Criteria:

• Define open boundary data, surface forcing, river forcing and add definitions to README (wild cards accepted)
• Create ticket(s) to test with CO9_AMM15 with NOWMAPIII required forcing.