Save all of a bridge's OR addresses

Bridges can have multiple OR addresses, indicated by the 'a' keywork in
the the network status document:
https://gitlab.torproject.org/tpo/core/torspec/-/blob/c17c36c57635a9ebf88b2b41dc41cbddcf56f7ef/dir-spec.txt#L1616
1 job for main in 2 minutes and 50 seconds (queued for 4 seconds)
Status Name Job ID Coverage
  Test
failed test #36330

00:02:50

 
Name Stage Failure
failed
test Test
go: downloading github.com/matttproud/golang_protobuf_extensions v1.0.1
go: downloading golang.org/x/net v0.0.0-20200625001655-4c5254603344
$ go vet -composites=false ./...
go: downloading github.com/emersion/go-message v0.14.1
go: downloading github.com/martinlindhe/base36 v1.1.0
go: downloading github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594
# gitlab.torproject.org/tpo/anti-censorship/rdsys/pkg/usecases/resources
pkg/usecases/resources/bridges.go:53:2: struct field tag `json: "or-addresses"` not compatible with reflect.StructTag.Get: bad syntax for struct tag value
Cleaning up file based variables
ERROR: Job failed: exit code 1