Backport of agent/auto-auth: add exit_on_err configurable into release/1.10.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #17091 to be assessed for backporting due to the inclusion of the label backport/1.10.x.

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The below text is copied from the body of the original PR.

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When Agent's auto-auth encounters a problem it will retry indefinitely, regardless of the error. This configurable allows users to specify if Vault should exit on auto-auth error, similar to exit_on_err in the caching engine: https://www.vaultproject.io/docs/agent/caching#exit_on_err.

At the moment this will exit on any error, but I'm open to only exiting on some errors (such as 400 errors).

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Overview of commits

• 8fddccd

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