Allow using envFrom to load environment variables

[genebean]

Description

This change is in support of loading environment variables from secrets. The Gandi provider requires the use of an environment variable that needs to be presented securely and this facilitates that.

Fixes #4670

Checklist

• Unit tests updated
• End user documentation updated

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[k8s-ci-robot]

Hi @genebean. Thanks for your PR.

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[mloiseleur]

See #3803 and all other PRs about this.
/close

[k8s-ci-robot]

@mloiseleur: Closed this PR.

In response to this:

See #3803 and all other PRs about this.
/close

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[genebean]

See #3803 and all other PRs about this.

/close

That ticket does not address how I'm supposed to provide a secret in a gitops workflow. There is no way I am aware of to securely provide a value to env... is there some way you are aware of?