golinter fix (#1807)

This fix fixes golinter warning:
```
plugin/tls/tls_test.go:1:⚠️ file is not goimported (goimports)
```

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang
2018-05-16 14:35:31 -07:00
committed by Miek Gieben
parent 05a030e17b
commit 9a82fa0374