Removing the server store makes the way we handle data going in and out
of the wizard state more consistent. Each customisation is mapped into
the wizard state and pulled out when generating the blueprint
payload.
When the services and kernel customisations are implemented, this
information will need to be stored inside of the wizard state anyway.
Lastly this will make implementing a compliance step easier for edit
mode, removing the need to write to the wizard state from within the
server store when only a compliance policy id is available (on the
review page), which would be used to fetch the profile ref id, which
would in turn be used to fetch the customisations not stored in the
wizard state.
CentOS 8 was deprecated and is no longer used, but 'On Edit' for a no longer valid blueprint with 'centos-8' as their distribution defaulted to RHEL 9.
