An idea ignited in 1989, which sat dormant for   23 years, took flight Wednesday afternoon at The Ridge Golf Club in Auburn. On hole No. 1, Doug Frost, a former technician for NASA and retired Grass Valley postman, took a few minutes to set up his shot, counted down from five and blast off — Rocketry Golf was reborn. Frost, along with club pro Shawn Kelly and a small group of reporters and photographers, watched as a plastic golf ball attached to a model rocket launched into the air. The rocket and ball became lost in the overcast sky, …