Accompanies #1592.

The xml_consistency.py script checks for a variety of other problems in
vk.xml, but hasn't been run in CI until now. The MR also makes a few
tweaks to fix or ignore two unrelated issues found by the script.

The current version of the reuse tool complains about unused licenses
and this is causing the updated CI image to fail the 'reuse lint' check.

This is a replacement for #1592 since that appeared to have some git
artifacts resulting from a rebase that are breaking CI.

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