Added graceful shutdown for upstart service.
Reworked slightly the mastership & device managers and stores to make it work (sort-of) in the distributed env.
diff --git a/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java
new file mode 100644
index 0000000..5e1e3b6
--- /dev/null
+++ b/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java
@@ -0,0 +1,36 @@
+package org.onlab.onos.cluster;
+
+import java.util.Set;
+
+/**
+ * Test adapter for the cluster service.
+ */
+public class ClusterServiceAdapter implements ClusterService {
+ @Override
+ public ControllerNode getLocalNode() {
+ return null;
+ }
+
+ @Override
+ public Set<ControllerNode> getNodes() {
+ return null;
+ }
+
+ @Override
+ public ControllerNode getNode(NodeId nodeId) {
+ return null;
+ }
+
+ @Override
+ public ControllerNode.State getState(NodeId nodeId) {
+ return null;
+ }
+
+ @Override
+ public void addListener(ClusterEventListener listener) {
+ }
+
+ @Override
+ public void removeListener(ClusterEventListener listener) {
+ }
+}