Display decimal value in the INT UI instead of hex

More human readable and it is easiler to convert back in the backend when
we trying to delete a intent.

Change-Id: I464a400b3a478ce7a0cda6657217c18e0efc3b38
(cherry picked from commit 56717459b1985dafc73ecaae4c315287fab51996)
diff --git a/apps/inbandtelemetry/api/src/main/java/org/onosproject/inbandtelemetry/api/IntIntentId.java b/apps/inbandtelemetry/api/src/main/java/org/onosproject/inbandtelemetry/api/IntIntentId.java
index 293cbdb..60806f4 100644
--- a/apps/inbandtelemetry/api/src/main/java/org/onosproject/inbandtelemetry/api/IntIntentId.java
+++ b/apps/inbandtelemetry/api/src/main/java/org/onosproject/inbandtelemetry/api/IntIntentId.java
@@ -46,6 +46,6 @@
 
     @Override
     public String toString() {
-        return Long.toHexString(this.identifier);
+        return Long.toString(this.identifier);
     }
 }