balena-image-flasher: depend on balena-image:do_image_complete

[mtoman]

At this moment balena-image-flasher depends on do_image_sign_digest and do_rootfs of balena-image, but this is not enough, as the signature symlink is only created by a postprocess script.

This patch replaces the two existing dependencies by do_image_complete, which should cover everything.

---

Contributor checklist

• Changes have been tested
  • Covered in automated test suite
  • Manual test case recorded
• Change-type present on at least one commit
• Signed-off-by is present
• The PR complies with the Open Embedded Commit Patch Message Guidelines

Reviewer Guidelines

• When submitting a review, please pick:
  • 'Approve' if this change would be acceptable in the codebase (even if there are minor or cosmetic tweaks that could be improved).
  • 'Request Changes' if this change would not be acceptable in our codebase (e.g. bugs, changes that will make development harder in future, security/performance issues, etc).
  • 'Comment' if you don't feel you have enough information to decide either way (e.g. if you have major questions, or you don't understand the context of the change sufficiently to fully review yourself, but want to make a comment)

[flowzone-app]

Website deployed to CF Pages, 👀 preview link https://fe86922f.balena-os.pages.dev