ONOS-365 Excluding intents with state=null from output.

Change-Id: I96555f6c1483e9d744b7d67bae8d4a221a630f5d
diff --git a/cli/src/main/java/org/onlab/onos/cli/net/IntentsListCommand.java b/cli/src/main/java/org/onlab/onos/cli/net/IntentsListCommand.java
index 7f84207..fbcb5e9 100644
--- a/cli/src/main/java/org/onlab/onos/cli/net/IntentsListCommand.java
+++ b/cli/src/main/java/org/onlab/onos/cli/net/IntentsListCommand.java
@@ -76,10 +76,12 @@
         } else {
             for (Intent intent : service.getIntents()) {
                 IntentState state = service.getIntentState(intent.id());
-                print("id=%s, state=%s, type=%s, appId=%s",
-                      intent.id(), state, intent.getClass().getSimpleName(),
-                      intent.appId().name());
-                printDetails(service, intent);
+                if (state != null) {
+                    print("id=%s, state=%s, type=%s, appId=%s",
+                          intent.id(), state, intent.getClass().getSimpleName(),
+                          intent.appId().name());
+                    printDetails(service, intent);
+                }
             }
         }
     }