Tool check needs to be unhealthy in case of copyset log behind

[YunhuiChen]

Describe the bug (描述bug) Tool check needs to be unhealthy in case of copyset log behind

To Reproduce (复现方法)

1、stop zone1 all metaserver and use \vdbench\mdtest 2、wait 1 hours 3、start metaserver, use curvefs_tool status Expected behavior (期望行为)

Versions (各种版本) OS: Compiler: branch: commit id:

Additional context/screenshots (更多上下文/截图)

[cw123]

leader 0.0.0.0

[Cyber-SiKu]

it will fix in new tool