If package management is disabled we remove the state and configuration for the
package manager after the rootfs has been populated. This list wasn't complete
and the DNF/RPM configuration files were left behind.
As we've added files to the list (and not just directories), expand the
backup/restore package management state code to handle this.
(From OE-Core rev: c8a6422457b4d29e6afd1e193b8b921287472137)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>