These options should only be enabled when using SELinux, so apply them only
when "selinux" is in the DISTRO_FEATURES. The fragment is a copy of the one in
meta-selinux with the addition of DEFAULT_SECURITY_DAC and LSM.
https://onedigi.atlassian.net/browse/DEL-7641
Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>