Stop measuring dirauths
Working on #40049 (closed) i've found that the dirauths are being measured even if the variable in the configuration is
Since torflow is not measuring them, sbws should stop measuring them too.
I think it's due to the lines:
if not self.measure_authorities: relays = relays.difference(set(self.relay_list.authorities))
Probably cause the object id is different in the 2 lists.