We should avoid using composite labels like RHEL8-FIPS, the correct selector for FIPS VMs should be the following RHEL8 && x86_64 && FIPS.

Therefore jcasc declaration should be refactored so that RHEL8-FIPS is replaced with RHEL8 FIPS. Beware that matrix should be updated too, and by default, FIPS should be negated, actual jobs that use RHEL8 && x86_64 or RHEL8 && mem*G should be updated negating FIPS as well, RHEL8 && x86_64 && !FIPS