ncm-ceph: fix for cat and ls things

yes, we were considering this before for the SSH_COMMAND some time ago. But the issue still stays, that , in our main ceph.pm, we do:
`use base qw(NCM::Component NCM::Component::Ceph::commands NCM::Component::Ceph::crushmap
    NCM::Component::Ceph::daemon NCM::Component::Ceph::config NCM::Component::Ceph::compare );` 
This way, we duplicate the includes :smile: