Adding OLS device Type for ODTN project

Change-Id: Ia3472b47ea12d2f2f44de9cb88f20774881530ee
diff --git a/core/api/src/main/java/org/onosproject/net/Device.java b/core/api/src/main/java/org/onosproject/net/Device.java
index 4d8bdb0..da9a72e 100644
--- a/core/api/src/main/java/org/onosproject/net/Device.java
+++ b/core/api/src/main/java/org/onosproject/net/Device.java
@@ -27,7 +27,7 @@
      */
     enum Type {
         SWITCH, ROUTER, ROADM, OTN, ROADM_OTN, FIREWALL, BALANCER, IPS, IDS, CONTROLLER,
-        VIRTUAL, FIBER_SWITCH, MICROWAVE, OLT, ONU, OPTICAL_AMPLIFIER, OTHER, SERVER
+        VIRTUAL, FIBER_SWITCH, MICROWAVE, OLT, ONU, OPTICAL_AMPLIFIER, OLS, OTHER, SERVER
     }
 
     /**
diff --git a/core/api/src/main/java/org/onosproject/net/GridType.java b/core/api/src/main/java/org/onosproject/net/GridType.java
index 498b908..1e21fac 100644
--- a/core/api/src/main/java/org/onosproject/net/GridType.java
+++ b/core/api/src/main/java/org/onosproject/net/GridType.java
@@ -25,5 +25,6 @@
 public enum GridType {
     DWDM,               // Dense Wavelength Division Multiplexing
     CWDM,               // Coarse WDM
-    FLEX                // Flex Grid
+    FLEX,               // Flex Grid
+    UNKNOWN             // Unknown
 }