tidyoux

> You should specify version by `--version`. Though I think we should provide a default version. cc @Somefive I saw the command from here. It looks like you need to...

After specifying the version, I got these errors ``` $ vela install -v 1.8 [95/1929] Check Requirements ... Installing KubeVela Core ... Helm Chart used for KubeVela control plane installation:...