Add Options.OnConnect

sentinel.go

@@ -23,6 +23,8 @@ type FailoverOptions struct {
 
 	// Following options are copied from Options struct.
 
+	OnConnect func(*Conn) error
+
 	Password string
 	DB       int
 
@@ -42,6 +44,8 @@ func (opt *FailoverOptions) options() *Options {
 	return &Options{
 		Addr: "FailoverClient",
 
+		OnConnect: opt.OnConnect,
+
 		DB:       opt.DB,
 		Password: opt.Password,