Bay ammo correction

[SJuliez]

• Fixes an obvious error that made probably all large aeros invalid by not finding their bay ammo.
• Fixes (I guess, I don't see how this could have worked before) a test class. I moved around stuff in there but the main change is calling EquipmentType.initializeTypes() before the tests.

[Sleet01]

LGTM
It probably worked previously because the Dropship BLK strings would load even without the equipment being initialized, because cargo bays weren't "equipment" per se.
I imagine that things are stricter now, after all the updates in .20.