Bump version 2.1.0-SNAPSHOT, minimal Netty 4.1 migration

Author: slandelle

client/pom.xml

@@ -2,7 +2,7 @@
 	<parent>
 		<groupId>org.asynchttpclient</groupId>
 		<artifactId>async-http-client-project</artifactId>
-		<version>2.0.25-SNAPSHOT</version>
+		<version>2.1.0-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>async-http-client</artifactId>
@@ -40,9 +40,8 @@
 			<classifier>linux-x86_64</classifier>
 		</dependency>
 		<dependency>
-			<groupId>org.asynchttpclient</groupId>
+			<groupId>io.netty</groupId>
 			<artifactId>netty-resolver-dns</artifactId>
-			<version>${project.version}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.reactivestreams</groupId>