Adds new RPC methods to router service interface

We have added Advertise() and Process() RPCs in this commit.

network/router/proto/router.proto

@@ -5,6 +5,8 @@ service Router {
         rpc Watch(WatchRequest) returns (stream Event) {};
 	rpc Lookup(LookupRequest) returns (LookupResponse) {};
         rpc List(ListRequest) returns (ListResponse) {};
+        rpc Advertise(AdvertiseRequest) returns (stream Advert) {};
+        rpc Process(Advert) returns (ProcessResponse) {};
 }
 
 // LookupRequest is made to Lookup
@@ -20,6 +22,10 @@ message LookupResponse {
 // WatchRequest is made to Watch Router
 message WatchRequest {}
 
+
+// AdvertiseRequest request a stream of Adverts
+message AdvertiseRequest {}
+
 // AdvertType defines the type of advert
 enum AdvertType {
         AdvertAnnounce = 0;
@@ -40,6 +46,9 @@ message Advert {
         repeated Event events = 5;
 }
 
+// ProcessResponse is returned by Process
+message ProcessResponse {}
+
 // EventType defines the type of event
 enum EventType {
         Create = 0;