Vote for relay bandwidths even if the min percentage has not been reached
In legacy/trac#28062 (moved) we add additional header lines when the minimum percentage of measured relays that pass some restrictions and do not write any bandwidth lines. A dirauth asked if that is better that writing the few bandwidth lines. The reason why we do it is because torflow does it and we want sbws 1.0 to behave as torflow. In future sbws versions, we might prefer to include the bandwidth lines