环境
kk：2.0.0
os：centos 7.9.2009（3.10.0-1160.45）
kubesphere：v3.1.1（kk在线安装）
kubernetes：1.20.4
问题
使用kk2.0升级kubesphere至v3.2.1报错，异常如下
17:24:10 CST message: [master]
parse node version failed: could not parse “line” as version
17:24:10 CST retry: [master]
17:24:15 CST message: [master]
parse node version failed: could not parse “line” as version
17:24:15 CST retry: [master]
17:24:20 CST message: [master]
parse node version failed: could not parse “line” as version
17:24:20 CST failed: [master]
error: Pipeline[UpgradeClusterPipeline] execute failed: Module[ClusterPreCheckModule] exec failed:
failed: [master] [CalculateMinK8sVersion] exec failed after 3 retires: parse node version failed: could not parse “line” as version
