RESP3: Populate new fields for the AOF fake client.

However we should remove this fake client ad-hoc creation, and replace
it with the proper call to createClient(-1), and then adjust the fake
client as we like.

src/aof.c

@@ -645,6 +645,8 @@ struct client *createFakeClient(void) {
     c->obuf_soft_limit_reached_time = 0;
     c->watched_keys = listCreate();
     c->peerid = NULL;
+    c->resp = 2;
+    c->user = NULL;
     listSetFreeMethod(c->reply,freeClientReplyValue);
     listSetDupMethod(c->reply,dupClientReplyValue);
     initClientMultiState(c);