[ONOS-2706] Insert Support for REST API model schema in  Swagger UI

Change-Id: Iad158d90f203101fd23328f30f2507b7677a1997
diff --git a/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGet.json b/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGet.json
new file mode 100644
index 0000000..9e451b3
--- /dev/null
+++ b/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGet.json
@@ -0,0 +1,26 @@
+{
+  "type": "object",
+  "required": [
+    "leaseTime",
+    "renewalTime",
+    "rebindingTime"
+  ],
+  "properties": {
+    "leaseTime": {
+      "type": "integer",
+      "format": "int64",
+      "example": "250"
+    },
+    "renewalTime": {
+      "type": "integer",
+      "format": "int64",
+      "example": "250"
+    },
+    "rebindingTime": {
+      "type": "integer",
+      "format": "int64",
+      "example": "250"
+    }
+  }
+}
+