StartScriptVersion configuration

[githupmrr]

File: /release-1.6/zh/deploy-failures.md
StartScriptVersion 配置为“v1”、“v2”在不同文档中有不同的定义：
https://docs.pingcap.com/zh/tidb-in-kubernetes/stable/deploy-failures中表明：当配置了 startUpScriptVersion 为 v1 时，TiDB Operator 会使用 dig 替换 nslookup 来检查 DNS。
https://docs.pingcap.com/zh/tidb-in-kubernetes/stable/configure-a-tidb-cluster#startscriptversion中表明：配置为v2 有以下优化，使用 dig 命令替换 nslookup 命令来解析 DNS。

互相冲突！！！

[csuzhangxc]

These are two different fields (although their names are similar):

• https://docs.pingcap.com/zh/tidb-in-kubernetes/stable/deploy-failures#pd-pod-nslookup-domain-failed: .spec.pd.startUpScriptVersion is only for PD
• https://docs.pingcap.com/zh/tidb-in-kubernetes/stable/configure-a-tidb-cluster#startscriptversion: .spec.startScriptVersion are for all components in a TidbCluster