add context to server.SubscriberOptions and broker.SubscribeOption

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

server/rpc_server.go

@@ -10,7 +10,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/micro/go-log"
+	log "github.com/micro/go-log"
 	"github.com/micro/go-micro/broker"
 	"github.com/micro/go-micro/codec"
 	"github.com/micro/go-micro/metadata"
@@ -357,6 +357,9 @@ func (s *rpcServer) Register() error {
 		if queue := sb.Options().Queue; len(queue) > 0 {
 			opts = append(opts, broker.Queue(queue))
 		}
+		if cx := sb.Options().Context; cx != nil {
+			opts = append(opts, broker.SubscribeContext(cx))
+		}
 		sub, err := config.Broker.Subscribe(sb.Topic(), handler, opts...)
 		if err != nil {
 			return err