Bump up the version to 2.3.4

Author: elingg

pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>org.apache.mesos</groupId>
   <artifactId>chronos</artifactId>
-  <version>2.3.3</version>
+  <version>2.3.4</version>
   <inceptionYear>2012</inceptionYear>
 
   <prerequisites>