Comments all lines from files in ansible-imported-configs after import from ansible

[lucklove]

Feature Request

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

https://asktug.com/t/topic/69833

Describe the feature you'd like:

After copying configs from ansible-imported-configs to meta.yaml, we should comments all lines in ansible-imported-configs.

Why the featue is needed:

It's a normal demand that the user may delete some configs from meta.yaml via tiup cluster edit-config, however, for imported configs, there is another copy in ansible-imported-configs so that the deleting action won't work unless deleting configs from ansible-imported-configs too because we will merge configs from ansible-imported-configs.
So after copying ansible-imported-configs to meta.yaml, we should comments all lines in ansible-imported-configs, by this way, there is only one copy of that config.
We can't delete ansible-imported-configs directly because we should keep the merging behavior for old clusters whose ansible-imported-configs wasn't copyed into meta.yaml.

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy: