Pass Allocator as RedisStateMachine constructor argument

[mp911de]

No description provided.

[anti-geek]

@mp911de Hello sir, was this change originally for a potential memory leak in the RedisStateMachine buffer? We are using the old version with a static allocator. Recently, we got a leak report (as follows), and we wonder if this pull request will fix this problem.

LEAK: ByteBuf.release() was not called before it's garbage-collected. See http://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records:
Created at:
io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:331)
io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:185)
io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:176)
io.lettuce.core.protocol.RedisStateMachine.(RedisStateMachine.java:58)