Pass cluster client to gRPC service impl

Signed-off-by: Finn Carroll <[email protected]>

server/src/main/java/org/opensearch/node/Node.java

@@ -1155,7 +1155,7 @@ protected Node(
             );
 
             GrpcServiceRegistry grpcReg = new GrpcServiceRegistry(
-                new NodesInfoServiceImpl()
+                new NodesInfoServiceImpl(client)
                 // TODO: Other service stubs here
             );