GetCurrentDevice will list devices managed

Change-Id: I83202aa5b4f9af8e4b1e662b589ce8d795808a8d
diff --git a/proto/importer.proto b/proto/importer.proto
index dd85cd1..e7117b1 100644
--- a/proto/importer.proto
+++ b/proto/importer.proto
@@ -36,8 +36,12 @@
 	string IpAddress = 1;
 }
 
+message DeviceList {
+        repeated string ip = 1;
+}
 
 message Empty {}
+
 service device_management {
     rpc SendDeviceInfo(DeviceInfo) returns (google.protobuf.Empty) {}
 
@@ -53,6 +57,7 @@
 
     rpc ClearCurrentEventList(Device) returns (google.protobuf.Empty) {}
 
+	rpc GetCurrentDevices(Empty) returns (DeviceList) {}
 }