Fix the version check when install ks with kubekey

[LinuxSuRen]

No description provided.

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[JohnNiang]

LGTM

Although it doesn't work by default because kks released don't support prerelease version currently, the change looks good to me.

[root@node1 ~]# ./ks install kk --zone="" -v v3.2.0-rc.1
start to install missing tool: kk
start to fetch the config
Enumerating objects: 265, done.
Counting objects: 100% (265/265), done.
Compressing objects: 100% (232/232), done.
Total 265 (delta 129), reused 78 (delta 25), pack-reused 0
start to download with 4 threads, size: 13341858, unit: 3335464
Downloading part 1:  [====================================================================] 100%
Downloading part 3:  [====================================================================] 100%
Downloading part 2:  [====================================================================] 100%
Downloading part 0:  [====================================================================] 100%
install ./kk to /usr/local/bin/kk
Error: Failed to download cluster config: Unsupported version: v3.2.0-rc.1

https://github.com/kubesphere/kubekey/releases/tag/v1.2.0-alpha.6

[LinuxSuRen]

Although it doesn't work by default because kks released don't support prerelease version currently, the change looks good to me.

You can install it via: hd install kubekey --accept-preReleas

[JohnNiang]

Although it doesn't work by default because kks released don't support prerelease version currently, the change looks good to me.

You can install it via: hd install kubekey --accept-preRelease

Thank you for your reminder. I'm going to try it out.