Turn off SELinux separation for containers MON and RGW

Turn off SELinux separation for containers MON and RGW

Initially MONs and RGW binded /etc/pki/ca-trust/extracted using the :z flag
(introduced to solve an OSP TripleO issue on RHEL - #3638) but using
this flag prevents local services (like sssd) running on the host from accessing
the certificates/files in that folder.

Signed-off-by: Teoman ONAY <tonay@redhat.com>
(cherry picked from commit 7e8ce2567ec7f163c763547252a7a5bcc983fd98)
(cherry picked from commit cf44ad76f6858520bae97940bb3aaf171f74e24c)