Add logging for debug

Change-Id: I104ca116fdb70ae1642865643832f448f043f0ba
diff --git a/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java b/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
index bcb2609..e5e1c69 100644
--- a/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
+++ b/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
@@ -227,6 +227,7 @@
             // Submit the intents
             for (Intent i : intents) {
                 intentService.submit(i);
+                log.debug("Submitted an intent: {}", i);
             }
         }