[update] add plugin config (#1180)

Signed-off-by: lihaowei <haoweili35@gmail.com>

rest/server.go

@@ -1,6 +1,7 @@
 package rest
 
 import (
+	"crypto/tls"
 	"log"
 	"net/http"
 
@@ -193,6 +194,15 @@ func WithUnauthorizedCallback(callback handler.UnauthorizedCallback) RunOption {
 	}
 }
 
+// WithTLSConfig returns a RunOption that with given tls config.
+func WithTLSConfig(cipherSuites []uint16) RunOption {
+	return func(engine *Server) {
+		engine.ngin.tlsConfig = &tls.Config{
+			CipherSuites: cipherSuites,
+		}
+	}
+}
+
 // WithUnsignedCallback returns a RunOption that with given unsigned callback set.
 func WithUnsignedCallback(callback handler.UnsignedCallback) RunOption {
 	return func(engine *Server) {