Support running a FIPS pipeline on RAT as part of package-and-qa
We wish to have an omnibus FIPS pipeline to allow us to execute end to end tests against a FIPS based deployment for MRs etc.
There is a discrepancy in OS usage, for example RAT FIPS pipelines ( eg. https://gitlab.com/gitlab-org/distribution/reference-architecture-tester/-/pipelines/545323897 ) use CentOS 8, whereas Omnibus uses Ubuntu 20.04
Note that the GET instructions for setting up FIPS environment uses Ubuntu 20.04 FIPS LTS as OS image https://docs.gitlab.com/ee/development/fips_compliance.html#set-up-a-fips-enabled-cluster
Edited by Balasankar 'Balu' C