Feature: Allow ManagerOptions to be marshalled

[ryanmcnamara]

It would be very nice if the ManagerOptions https://github.com/kubernetes-sigs/controller-runtime/blob/main/pkg/manager/manager.go#L101 was more easily printable. Example use case: logging on startup to be sure of what config is used.

Using fmt.Sprintf("%#v", options) has been my workaround but it's pretty suboptimal (pointers not followed for example)

Currently using json.Marshal gives an error like

json: unsupported type: func(*rest.Config, *http.Client) (meta.RESTMapper, error)

Failing to marshal this field named MapperProvider

I'd be willing to PR this, what I would do is add the struct tag json:"-" on fields that should not be printed / logged (e.g. MapperProvider) and then use the standard json.Marshal to get my human readable string.

Wanted to gauge interest before making a PR

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/lifecycle stale

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/lifecycle rotten

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
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/close not-planned

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