Implemented the provision / activate ont workflow

Change-Id: Ife684f41e54e176879332922ad86f517358f15e7
diff --git a/models/physical/ont.go b/models/physical/ont.go
index 4bd47ac..4a9ca89 100644
--- a/models/physical/ont.go
+++ b/models/physical/ont.go
@@ -20,8 +20,9 @@
 Ont represents a single ont/onu connect to a splitter on a Port
 */
 type Ont struct {
-	Number int
-	Svlan  int
-	Cvlan  int
-	Parent *PONPort `json:"-"`
+	Number       int
+	Svlan        int
+	Cvlan        int
+	SerialNumber string
+	Parent       *PONPort `json:"-"`
 }