Replace curve_ops_tool and curvefs_tool to with new tools_v2

[caoxianfei1]

The current cluster deployed by curveadm still relies on old tools. Curve_ops_tool and curvefs_tool are used in some scripts. Now we have developed a new tool tools_v2. Please help us replace these old tool command lines with new tools.

For details, please refer to New Tools document：
tools-v2 README: https://github.com/opencurve/curve/tree/master/tools-v2

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Tips

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