hide outdated component versions or other ways to prevent user use outdated tiup-cluster

[kaaaaaaang]

Feature Request

Is your feature request related to a problem? Please describe:

Describe the feature you'd like:

Why the featue is needed:

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[kaaaaaaang]

add more warning message

[kaaaaaaang]

https://docs.pingcap.com/zh/tidb-in-kubernetes/stable/tidb-operator-overview