Added WIP Limited fuel in Refuel points.

Vanilla development commits:

https://github.com/DayZMod/DayZ/commit/707a591765c8a568429fd243a0f3d6f38793d8dc

https://github.com/DayZMod/DayZ/commit/c453cdedd2568ab365788415e6dcfbecc5c6cfd4

Set to double vanilla default value since Epoch has a lot more large
vehicles with 1000+ fuel capacity.

SQF/dayz_code/init/variables.sqf

@@ -418,6 +418,9 @@ if(isNil "dayz_POIs") then {
 if(isNil "dayz_ForcefullmoonNights") then {
 	dayz_ForcefullmoonNights = false; // Forces night time to be full moon.
 };
+if(isNil "dayz_randomMaxFuelAmount") then {
+	dayz_randomMaxFuelAmount = 500; //Puts a random amount of fuel in all fuel stations.
+};
 
 //Replace server individual settings with ranked settings
 if(isNil "dayz_presets") then { dayz_presets = "Vanilla"; };