Simulation starting position is always facing East (positive x)

[C-Glick]

When starting the simulation the UAS always faces East, positive x.
The runway faces north, south so this would be the preferred direction. Changing the model pose in open_uas.sdf does not appear to change how it spawns when compiling and running the simulation.

Rotating the terrain model 90 degrees does not also rotate the GPS heading, the GPS data would not match the terrain model.

Is there a way to rotate the terrain AND the GPS heading?