fixes monitor_address and monitor_interface features
fixes monitor_address and monitor_interface features

Before this commit if you had set monitor_interface in your
inventory file for a specific host it would be ignored and the value
in group_vars/all would have been used.

Also, this enables support for monitor_address again as it had been
broken by previous changes to this template.

Signed-off-by: Andrew Schoen <1bb641dc23c3a93cce4eee683bcf4b2bea7903a3@redhat.com>

ceph/ansible-ceph-common