Include javassist for better perf

netty/pom.xml

@@ -19,6 +19,11 @@
 		<artifactId>jackson-databind</artifactId>
 		<version>2.1.1</version>
 	</dependency>
+    <dependency>
+        <groupId>org.javassist</groupId>
+        <artifactId>javassist</artifactId>
+        <version>3.18.0-GA</version>
+    </dependency>
   </dependencies>
   
   <build>