add test for missing w lines in router descriptors
add test for missing w lines in router descriptors

isislovecruft/txtorcon,david415/txtorcon,ghtdak/txtorcon,ghtdak/txtorcon,david415/txtorcon,isislovecruft/txtorcon,meejah/txtorcon,sammyshj/txtorcon,sammyshj/txtorcon,meejah/txtorcon