Adding OLS device Type for ODTN project

Change-Id: Ia3472b47ea12d2f2f44de9cb88f20774881530ee
diff --git a/core/protobuf/models/proto/net/device/DeviceEnumsProto.proto b/core/protobuf/models/proto/net/device/DeviceEnumsProto.proto
index e8713d3..aaecef0 100644
--- a/core/protobuf/models/proto/net/device/DeviceEnumsProto.proto
+++ b/core/protobuf/models/proto/net/device/DeviceEnumsProto.proto
@@ -33,6 +33,7 @@
     VIRTUAL_DEVICE = 11;
     FIBER_SWITCH = 12;
     MICROWAVE = 13;
+    OLS = 14;
 }
 
 enum DeviceEventTypeProto {