Issue title: Missing n6 parser mappings
 Issue body: * `{"category": "other", "confidence": "low", "expires": "2019-02-03T20:12:03Z", "fqdn": "example.com", "source": "example", "time": "2019-01-12T23:12:02Z", "type": "bl-update", "id": "some hex string", "address": [{"cc": "AT", "ip": "231.355.1620", "asn": 0}]}`
 Comments: 
 Comment 0: * ` {"category": "cnc", "confidence": "medium", "name": "some text here ", "address": [{"cc": "CC, "ip": "116.69.203.115", "asn": 0}], "source": "hidden.??", "time": "2019-01-18T07:59:06Z", "type": "event", "id": "hex string"}`
{'source': 'GithubIssues', 'repo_name_with_owner': 'certtools/intelmq', 'issue_id': 408798139, 'repo_stars': 805.0}