helm: set probes to use named port

[jcpunk]

The best practices docs I'm reading say to use named ports for probes and services to ensure consistency and simplify abstraction.

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/lifecycle stale

[k8s-triage-robot]

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

This bot triages 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
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/lifecycle rotten

[jcpunk]

/remove-lifecycle rotten