opt: Rule字段,去掉ssl,改成id。

zone.proto

@@ -227,7 +227,7 @@ message Rule{
   optional uint32 originProtocol = 7;
   map<string, string> requestHeader = 8;
   map<string, string> responseHeader = 9;
-  optional string ssl = 10;
+  optional string id = 10;
 }
 message RuleList{
   repeated Rule rules = 1;