[Add] Some more enforcments of pilot hostile status.

dat/missions/empire/collective/ec05.lua

@@ -175,6 +175,7 @@ function final_talk()
 
     -- ESS Trinity becomes collective now.
     trinity:setFaction("Collective")
+    trinity:setHostile()
 
     final_fight = 3
     misn.timerStart("final_talk", rnd.int(4000, 5000))
@@ -186,7 +187,10 @@ end
 
 -- Calls help for the ESS Trinity.
 function call_drones()
-  pilot.add("Collective Sml Swarm")
+  pilots = pilot.add("Collective Sml Swarm")
+  for k, v in ipairs(pilots) do
+    v:setHostile()
+  end
 end
 
 -- Add escorts that weren't killed sometime.