Skip motd check in hardened images

[rjschwei]

@jgleissner set the variant_id in keg recipes accordingly, please.

[pdostal]

Can I ask why motd check is not applicable in FIPS mode?

[rjschwei]

@pdostal we have to skip that test for hardened images, the banner_etc_motd rule sets the content and file_groupowner_etc_motd file_owner_etc_motd and file_permissions_etc_motd rules set the permissions.

Or in short the hardening rules impose a set message that does not match our test. We could fork in the test that ensures the message for hardened images is set properly, but that would be redundant as it is set by a specific rule being applied and if rule application fails the build fails.

[pdostal]

Understand now, thank you