Change system info probe to use OWN offline mode
Change system info probe to use OWN offline mode

Replaces CHROOT offline mode. System info probe won't call chroot()
in offline mode anymore, but it will add a prefix to file paths instead.

jan-cerny/openscap,OpenSCAP/openscap,jan-cerny/openscap,redhatrises/openscap,jan-cerny/openscap,redhatrises/openscap,redhatrises/openscap,redhatrises/openscap,jan-cerny/openscap,OpenSCAP/openscap,mpreisler/openscap,OpenSCAP/openscap,OpenSCAP/openscap,mpreisler/openscap,redhatrises/openscap,mpreisler/openscap,jan-cerny/openscap,OpenSCAP/openscap,OpenSCAP/openscap,mpreisler/openscap,redhatrises/openscap,mpreisler/openscap,jan-cerny/openscap,mpreisler/openscap