[kernel] fix command default reply, now it like redis have (see 6fa290a)
[kernel] fix command default reply, now it like redis have (see 6fa290a)

- Command::REPLY_FALSE
- Command::REPLY_TRUE
- Command::REPLY_NIL

azat/boostcache,azat/boostcache,azat/boostcache,azat/boostcache