client: use deep-copy when setting permission during make_request

We need MetaRequest's perms.gids keeps longer than syscal if mds reboot.
When mds reboot we need to rebuild MClientRequest with MetaRequest.

Fixes: https://tracker.ceph.com/issues/59514
Signed-off-by: Mer Xuanyi <xuanyi.meng@xtaotech.com>

src/client/MetaRequest.h

@@ -163,7 +163,7 @@ struct MetaRequest {
   void set_alternate_name(std::string an) { alternate_name = an; }
   void set_string2(const char *s) { path2.set_path(std::string_view(s), 0); }
   void set_caller_perms(const UserPerm& _perms) {
-    perms.shallow_copy(_perms);
+    perms = _perms;
     head.caller_uid = perms.uid();
     head.caller_gid = perms.gid();
   }