GODRIVER-1476: Support fully qualified SRV DNS names (#285)

Author: SpikesDivZero

x/mongo/driver/dns/dns.go

@@ -80,10 +80,12 @@ func (r *Resolver) fetchSeedlistFromSRV(host string, stopOnErr bool) ([]string,
 		return nil, err
 	}
 
+	trimmedHost := strings.TrimSuffix(host, ".")
+
 	var parsedHosts []string
 	for _, address := range addresses {
 		trimmedAddressTarget := strings.TrimSuffix(address.Target, ".")
-		err := validateSRVResult(trimmedAddressTarget, host)
+		err := validateSRVResult(trimmedAddressTarget, trimmedHost)
 		if err != nil {
 			if stopOnErr {
 				return nil, err