SUSE: Use zypper's --force-resolution option when preparing the cache
SUSE: Use zypper's --force-resolution option when preparing the cache

Since we perform a full distribution update, some packages may be
removed, moved or conflict with new ones. As such, force zypper to come
up with a solution instead of waiting for user input.

Change-Id: Ibb3a5ba1d4d43bd70d908322b177abb7ed86876e

openstack/openstack-ansible-lxc_hosts,openstack/openstack-ansible-lxc_hosts