The airport commission on Tuesday agreed to let the Greater Des Moines Partnership arrange for musicians to perform near the airport parking ramp as the nation’s governors arrive beginning Thursday for the National Governors Association conference. The deal, which involves no cash and will include future events, also allows new displays near the security check and baggage areas. Some may be interactive digital offerings, said Kevin Foley, the airport’s executive director and general manager. The Partnership wanted music in the terminal, but Foley said there wasn’t room.