[21.05] remove old ceph

[osnyx]

@flyingcircusio/release-managers

PL-131515

Release process

Impact: internal only

• removal of packages and special case handling, these cases are not relevant to the current state of our deployed platform anymore

Changelog:

• remove support for Ceph Jewel and Luminous
  • remove packages
  • remove role integration
  • remove associated packages of that version (sensu checks, old fc.qemu versions)
  • drop fc-ceph modules for Jewel and Luminous
  • drop Jewel and Luminous tests

Security implications

• Security requirements defined? (WHERE)
  • removal of deprecated software versions and case distinctions reduces platform complexity
  • automated tests still need to pass
• Security requirements tested? (EVIDENCE)
  • automated tests still pass

[osnyx]

This will very likely conflict with #771 due to removal of package entries in pkgs/fc/default.nix