Defer failure if /boot/efi/EFI doesn't exist

[steveb]

Grub and shim files in /boot/efi/EFI won't be required if /var/lib/ironic is already pre-populated from
/usr/share/ironic-operator/var-lib-ironic/, so it should only fail if those files need to be sourced from /boot/efi/EFI.

This won't cause issues with older images, and allows for s2i images which won't have /boot/efi/EFI files available.

Jira: OSPRH-34544

Checklist before requesting a review

• I have performed a self-review of my code and confirmed it passes tests
• Performed pre-commit run --all
• Tested operator image in a test/dev environment. It can be CRC via install_yamls or a hotstack instance (optional)
• Verified that no failures present in logs(optional):
  • ironic-operator-build-deploy-kuttl
  • podified-multinode-ironic-deployment

[coderabbitai]

Important

• 🔍 Trigger review

This repository does not receive automatic reviews because it has fewer than 10 stars.

⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Pro Plus

Run ID: e0585a30-51e5-4c44-b7da-0eaeccff46b2

---

_{Comment @coderabbitai help to get the list of available commands.}

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: juliakreger, steveb

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [juliakreger,steveb]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment