Upgrade fluid interfaces

9 tanks, with up to 64B/fluid with 2 capacity cards

src/main/java/appeng/core/Registration.java

@@ -323,6 +323,10 @@ final class Registration {
         Upgrades.PATTERN_EXPANSION.registerItem(parts.iface(), 3);
         Upgrades.PATTERN_EXPANSION.registerItem(blocks.iface(), 3);
 
+        // Fluid Interface
+        Upgrades.CAPACITY.registerItem(parts.fluidIface(), 2);
+        Upgrades.CAPACITY.registerItem(blocks.fluidIface(), 2);
+
         // IO Port!
         Upgrades.SPEED.registerItem(blocks.iOPort(), 3);
         Upgrades.REDSTONE.registerItem(blocks.iOPort(), 1);