Force netty-handler dependency so dependencyManagement propagates, close AsyncHttpClient#1409

Author: slandelle

client/pom.xml

@@ -34,6 +34,10 @@
 			<groupId>io.netty</groupId>
 			<artifactId>netty-codec-http</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>io.netty</groupId>
+			<artifactId>netty-handler</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-transport-native-epoll</artifactId>