Update hazelcast version to 3.4

Fixes ONOS-864

Change-Id: Ib8ba93de2bcc5fd278039d24482a9019f2d1eae8
diff --git a/pom.xml b/pom.xml
index 93818da..7396002 100644
--- a/pom.xml
+++ b/pom.xml
@@ -245,7 +245,7 @@
             <dependency>
                 <groupId>com.hazelcast</groupId>
                 <artifactId>hazelcast</artifactId>
-                <version>3.3.2</version>
+                <version>3.4</version>
             </dependency>
             <dependency>
                 <groupId>com.eclipsesource.minimal-json</groupId>