Allow AUTH while loading the DB in memory.

While Redis is loading the AOF or RDB file in memory only a subset of
commands are allowed. This commit adds AUTH to this subset.

src/redis.c

@@ -207,7 +207,7 @@ struct redisCommand redisCommandTable[] = {
     {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
     {"keys",keysCommand,2,"rS",0,NULL,0,0,0,0,0},
     {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
-    {"auth",authCommand,2,"rs",0,NULL,0,0,0,0,0},
+    {"auth",authCommand,2,"rsl",0,NULL,0,0,0,0,0},
     {"ping",pingCommand,1,"r",0,NULL,0,0,0,0,0},
     {"echo",echoCommand,2,"r",0,NULL,0,0,0,0,0},
     {"save",saveCommand,1,"ars",0,NULL,0,0,0,0,0},