Add support for the openSUSE Leap distributions. The security rules
are similar to the RedHat and Ubuntu ones. We also replace
ansible_os_family with ansible_pkg_mgr since the former does not
return consistent results across different SUSE distributions especially
on older Ansible versions.
Change-Id: I20ffe17039bb641aad70d8123f0b7e7417a42cba
f422da8599