HADOOP-9991. Update netty to netty-all to 4.0.34.Final

Author: ceefour

hadoop-project/pom.xml

@@ -577,7 +577,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.23.Final</version>
+        <version>4.0.34.Final</version>
       </dependency>
 
       <dependency>