“config rewrite”有bug

[takenliu]

Description

config rewrite不能正确的重写配置文件
比如

$ grep min_blob_size nodeA/tendisplusA.conf
rocks.min_blob_size 4096
$ redis-cli -h 127.0.0.1 -p 52000 -a xxx config set rocks.min_blob_size 2048
OK
$ redis-cli -h 127.0.0.1 -p 52000 -a xxx config rewrite
$ grep min_blob_size nodeA/tendisplusA.conf
rocks.min_blob_size 4096

还有部份参数也有类似问题。

Expected Behavior

Current Behavior

Possible Solution

Steps to Reproduce (for bugs)

Context

Your Environment

• Operating System and version:
• Machine Specifications:
• Tendis Version:
• Tendis Configuration:
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