Update hazelcast version to 3.4

Fixes ONOS-864

Change-Id: Ib8ba93de2bcc5fd278039d24482a9019f2d1eae8
diff --git a/features/features.xml b/features/features.xml
index 865e51b..b16b57f 100644
--- a/features/features.xml
+++ b/features/features.xml
@@ -34,7 +34,7 @@
 
         <bundle>mvn:joda-time/joda-time/2.5</bundle>
 
-        <bundle>mvn:com.hazelcast/hazelcast/3.3.2</bundle>
+        <bundle>mvn:com.hazelcast/hazelcast/3.4</bundle>
         <bundle>mvn:io.dropwizard.metrics/metrics-core/3.1.0</bundle>
         <bundle>mvn:io.dropwizard.metrics/metrics-json/3.1.0</bundle>
         <bundle>mvn:com.eclipsesource.minimal-json/minimal-json/0.9.1</bundle>