The partiton number is out of range in one copyset

[SeanHai]

Describe the bug (描述bug)
The partition limit of one copyset is 256 default, but created more the 256.

cluster: massive cluster

for i in {1..13};do curvefs_tool list-partition -fsId=$i | grep copysetId;done | awk '{arr[$2]++};END{for(i in arr){print i,arr[i]}}' | sort -nk1

To Reproduce (复现方法)

Expected behavior (期望行为)

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