Is there something I can put in this spot on the packager to have it default to the forward facing camera?
It is in remote Instance settings:
Full settings->Show Advanced->Remote Settings->Camera options->Camera Path ID… enter the USB path of the camera you want.
NOTE:
The USB path may not be identical on all devices so it may not work on install.
If this does not work, the value is set when the camera is chosen in the dialog on the device and saved for later use.