Allocate a floating IP

        .. versionadded:: 2016.3.0

def floating_ip_create(self, pool=None):
        '''
        Allocate a floating IP

        .. versionadded:: 2016.3.0
        '''
        nt_ks = self.compute_conn
        floating_ip = nt_ks.floating_ips.create(pool)
        response = {
            'ip': floating_ip.ip,
            'fixed_ip': floating_ip.fixed_ip,
            'id': floating_ip.id,
            'instance_id': floating_ip.instance_id,
            'pool': floating_ip.pool
        }
        return response