Merge pull request #1285 from sulake/update_netty

Netty 4.1.21 + BOM import.

pom.xml

@@ -129,6 +129,17 @@
         </profile>
     </profiles>
 
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>io.netty</groupId>
+                <artifactId>netty-bom</artifactId>
+                <version>4.1.21.Final</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
 
   <build>
       <directory>target</directory>

redisson-all/pom.xml

@@ -87,12 +87,10 @@
             <groupId>io.netty</groupId>
             <artifactId>netty-transport-native-epoll</artifactId>
             <classifier>linux-x86_64</classifier>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-transport-native-kqueue</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>de.ruedigermoeller</groupId>

redisson/pom.xml

@@ -34,45 +34,37 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-transport-native-kqueue</artifactId>
-            <version>4.1.20.Final</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-transport-native-epoll</artifactId>
-            <version>4.1.20.Final</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-common</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-codec</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-buffer</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-transport</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-resolver-dns</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-handler</artifactId>
-            <version>4.1.20.Final</version>
         </dependency>
 
         <dependency>