Bumping netty version.

Change-Id: Iec0f4fa83d7f2e9bbe12b21c620d479155055dd7
diff --git a/features/features.xml b/features/features.xml
index a9eeeca..9d89834 100644
--- a/features/features.xml
+++ b/features/features.xml
@@ -25,13 +25,13 @@
         <bundle>mvn:commons-configuration/commons-configuration/1.10</bundle>
         <bundle>mvn:com.google.guava/guava/22.0</bundle>
         <bundle>mvn:io.netty/netty/3.10.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-common/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-buffer/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-transport/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-handler/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-codec/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-transport-native-epoll/4.1.5.Final</bundle>
-        <bundle>mvn:io.netty/netty-resolver/4.1.5.Final</bundle>
+        <bundle>mvn:io.netty/netty-common/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-buffer/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-transport/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-handler/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-codec/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-transport-native-epoll/4.1.8.Final</bundle>
+        <bundle>mvn:io.netty/netty-resolver/4.1.8.Final</bundle>
         <bundle>mvn:commons-pool/commons-pool/1.6</bundle>
         <bundle>mvn:org.apache.commons/commons-math3/3.6.1</bundle>