Update context.proto for inventory

proto/context.proto

@@ -158,6 +158,11 @@ message Device {
   DeviceOperationalStatusEnum device_operational_status = 4;
   repeated DeviceDriverEnum device_drivers = 5;
   repeated EndPoint device_endpoints = 6;
+  repeated Component component = 7; // Used for inventory
+}
+
+message Component {
+  repeated string comp_string = 1;
 }
 
 message DeviceConfig {