Fix: Boss General Sentry Drone Issues

[commy2]

ZH 1.04:

• The Sentry Drone works slightly different than the other Sentry Drones:
  -- uses HumveeArmor type instead of the SentryDroneArmor
  -- does not get extra health from DroneArmor upgrade
  -- is immune to ECMs (missing jamming logic)
  -- has 10% less vision range compared to all other Sentry Drones (smaller Guard Mode area)
  -- uses default stealth detection range
  -- automatically attacks even when stealthed

[Jundiyy]

I find it more interesting since it becomes different and unique? (I know it looks the same, but fit the 'boss theme' as it's different, although I do know it's not the best Sentry Drone out there.)
Fix if you feel like it as it is not consistent but I kinda like that for the Boss.