Merge pull request AsyncHttpClient#1157 from Spikhalskiy/netty-consistent-version

Fix inherited netty dependency version to 4.0.36.Final, close AsyncHttpClient#1156

Author: slandelle

pom.xml

@@ -260,6 +260,11 @@
 				<artifactId>netty-transport</artifactId>
 				<version>${netty.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>io.netty</groupId>
+				<artifactId>netty-handler</artifactId>
+				<version>${netty.version}</version>
+			</dependency>
 		</dependencies>
 	</dependencyManagement>
 	<dependencies>