Fix serialization of multiple answers, that had caused a ResourceException

octodns/provider/ns1.py

@@ -215,9 +215,10 @@ class Ns1Provider(BaseProvider):
                 if not has_country and \
                    len(value.split('-')) > 1:  # pragma: nocover
                     has_country = True
+                for answer in target.values:
                     params['answers'].append(
                         {
-                        'answer': target.values,
+                            'answer': [answer],
                             'meta': {key: [value]},
                         },
                     )