add missing supermarket loader

[chris-rock]

No description provided.

[alexpop]

Works,

$ bundle exec inspec supermarket profiles
Available profiles:
-------------------
 * nathenharvey/tmp-compliance-profile
 * hardening/os-hardening
 * hardening/ssh-hardening


$ bundle exec inspec supermarket exec hardening/os-hardening -t docker://01ea5c92079a
........F.F.................F......FFF.....FFFF.F........FFFF..FFFFFFF...FF.FFFF.

I only had issues executing the ssh-hardening profile:

$ bundle exec inspec supermarket exec hardening/ssh-hardening -t docker://01ea5c92079a
tests-ssh-hardening-2.0/controls/ssh_spec.rb:24:in `require': cannot load such file -- ssh_crypto (LoadError)

[alexpop]

looks good, will take the ssh_crypto separately
👍