TCPParser unit tests try to depend on live annotator service

[stephen-soltesz]

TCPParser unit tests appear to depend on annotator.

2019/06/19 17:56:45 task.go:138: Processed 364 files, 0 nil data, 362 rows committed, 0 failed, from testdata/20190516T013026.744845Z-tcpinfo-mlab4-arn02-ndt.tgz into ndt_test
--- PASS: TestTCPParser (0.39s)
=== RUN   TestTCPTask
2019/06/19 17:56:45 api-v2.go:162: Post https://annotator-dot-.appspot.com/batch_annotate: dial tcp: lookup annotator-dot-.appspot.com: no such host
2019/06/19 17:56:45 base.go:134: error in client GetAnnotations:  Post https://annotator-dot-.appspot.com/batch_annotate: dial tcp: lookup annotator-dot-.appspot.com: no such host
2019/06/19 17:56:45 api-v2.go:110: Post https://annotator-dot-.appspot.com/batch_annotate: dial tcp: lookup annotator-dot-.appspot.com: no such host
2019/06/19 17:56:45 api-v2.go:162: Post https://annotator-dot-.appspot.com/batch_annotate: dial tcp: lookup annotator-dot-.appspot.com: no such host
2019/06/19 17:56:45 base.go:92: error in server GetAnnotations:  Post https://annotator-dot-.appspot.com/batch_annotate: dial tcp: lookup annotator-dot-.appspot.com: no such host
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