The ifupdown package isn't being built or tested at runtime. Add a test that uses sysvinit rather than systemd to do that. See this thread for background: http://lists.openembedded.org/pipermail/openembedded-core/2020-January/291093.html
https://git.openembedded.org/openembedded-core/commit/?id=2333ef5bb40132f05f69a5f6abaa3d086ecf9f6c