Move "*.enabled" keys from metadata to dedicated @ConfigurationProperties bean

[quaff]

IIRC, this is the recommended way.

[snicoll]

IIRC, this is the recommended way.

What makes you think that?

[philwebb]

I don't think we really have a single way to deal with enabled properties, and I'm not really sure that we should. I think there's at least one or two that only in the metadata because we don't have a @ConfigurationProperties class for them.

All things considered, I think we should leave things as they are for now.

Thanks anyway for the PR.

[quaff]

IIRC, this is the recommended way.

What makes you think that?

See #43886 (comment)

@wilkinsona prefer creating new @ConfigurationProperties bean over hand-written metadata, this PR reuse existing @ConfigurationProperties bean.

[wilkinsona]

That was a preference in a specific situation rather than a rule. Thanks again for the PR but, generally speaking, I think it's better to leave the introduction of stylistic changes that cut across the whole codebase to the core team.