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

Change-Id: I92d554d2e8c696780c3a2fab2accdab396a3805b
diff --git a/core/store/src/main/java/org/onlab/onos/store/device/impl/DistributedDeviceStore.java b/core/store/src/main/java/org/onlab/onos/store/device/impl/DistributedDeviceStore.java
index 52e8ed0..d73dd9e 100644
--- a/core/store/src/main/java/org/onlab/onos/store/device/impl/DistributedDeviceStore.java
+++ b/core/store/src/main/java/org/onlab/onos/store/device/impl/DistributedDeviceStore.java
@@ -110,6 +110,7 @@
 
     @Deactivate
     public void deactivate() {
+
         log.info("Stopped");
     }
 
diff --git a/core/store/src/main/java/org/onlab/onos/store/impl/StoreManager.java b/core/store/src/main/java/org/onlab/onos/store/impl/StoreManager.java
index 77463fd..abd8ade 100644
--- a/core/store/src/main/java/org/onlab/onos/store/impl/StoreManager.java
+++ b/core/store/src/main/java/org/onlab/onos/store/impl/StoreManager.java
@@ -45,7 +45,7 @@
 @Service
 public class StoreManager implements StoreService {
 
-    private static final String HAZELCAST_XML_FILE = "etc/hazelcast.xml";
+    protected static final String HAZELCAST_XML_FILE = "etc/hazelcast.xml";
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
diff --git a/core/store/src/test/java/org/onlab/onos/store/impl/TestStoreManager.java b/core/store/src/test/java/org/onlab/onos/store/impl/TestStoreManager.java
new file mode 100644
index 0000000..c9d8821
--- /dev/null
+++ b/core/store/src/test/java/org/onlab/onos/store/impl/TestStoreManager.java
@@ -0,0 +1,54 @@
+package org.onlab.onos.store.impl;
+
+import java.io.FileNotFoundException;
+import java.util.UUID;
+
+import com.hazelcast.config.Config;
+import com.hazelcast.config.FileSystemXmlConfig;
+import com.hazelcast.core.HazelcastInstance;
+
+/**
+ * Dummy StoreManager to use specified Hazelcast instance.
+ */
+public class TestStoreManager extends StoreManager {
+
+    /**
+     * Gets the Hazelcast Config for testing.
+     *
+     * @return
+     */
+    public static Config getTestConfig() {
+        Config config;
+        try {
+            config = new FileSystemXmlConfig(HAZELCAST_XML_FILE);
+        } catch (FileNotFoundException e) {
+            // falling back to default
+            config = new Config();
+        }
+        // avoid accidentally joining other cluster
+        config.getGroupConfig().setName(UUID.randomUUID().toString());
+        // quickly form single node cluster
+        config.getNetworkConfig().getJoin()
+            .getTcpIpConfig()
+            .setEnabled(true).setConnectionTimeoutSeconds(0);
+        config.getNetworkConfig().getJoin()
+            .getMulticastConfig()
+            .setEnabled(false);
+        return config;
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param instance Hazelast instance to return on #getHazelcastInstance()
+     */
+    public TestStoreManager(HazelcastInstance instance) {
+        this.instance = instance;
+    }
+
+    // Hazelcast setup removed from original code.
+    @Override
+    public void activate() {
+        setupKryoPool();
+    }
+}