use etc/hazelcast.xml + modifications when creating HZ for testing

Change-Id: I92d554d2e8c696780c3a2fab2accdab396a3805b
diff --git a/core/net/pom.xml b/core/net/pom.xml
index b252636..e2703b2 100644
--- a/core/net/pom.xml
+++ b/core/net/pom.xml
@@ -44,6 +44,13 @@
             <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.onlab.onos</groupId>
+            <artifactId>onos-core-store</artifactId>
+            <version>${project.version}</version>
+            <classifier>tests</classifier>
+            <scope>test</scope>
+        </dependency>
 
         <dependency>
             <groupId>org.apache.felix</groupId>