Loader should use standard file-level locking

[rwxrob]

The tools/clientcmd/loader.go (and potentially others) rely on the simple creation of a file to "lock" it for changes. This might work for most cases since there is not high performance demand for this tool, but this practice is a widely known anti-pattern for file-level locking. I propose the soon to be public internal Go locking replace this when available.

golang/go#33974

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/lifecycle stale

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/lifecycle rotten

[k8s-triage-robot]

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

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue.

In response to this:

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

This bot triages issues and PRs 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:

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/close

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