🌱 E2E: Specify checksum for live-iso

[lentzi90]

What this PR does / why we need it:

The test is currently failing because the checksum is missing.
See https://github.com/metal3-io/baremetal-operator/actions/workflows/e2e-test-periodic-main.yml

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[metal3-io-bot]

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[lentzi90]

/cc @kashifest @tuminoid

[lentzi90]

/hold
I will try specifying the checksum type also and see if that helps

[lentzi90]

/close
See #2110 instead

[metal3-io-bot]

@lentzi90: Closed this PR.

In response to this:

/close
See #2110 instead

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