Suppress noise on running unittests.
Suppress noise on running unittests.

Remove -v for go install.

Don't print success after every successful command.

Remove `run` in front of `go test` to avoid printing each command.

This reduces the number of log lines taken by successful unittests in Travis by
66%, and makes failures much more visible and easy to read.
lucasallan/boulder,bmw/boulder,lucasallan/boulder,jsha/boulder,ibukanov/boulder,jcjones/boulder,jfrazelle/boulder,ZCloud-Firstserver/boulder,benileo/boulder,jsha/boulder,ibukanov/boulder,bmw/boulder,patf/boulder,patf/boulder,benileo/boulder,benileo/boulder,ibukanov/boulder,letsencrypt/boulder,letsencrypt/boulder,bmw/boulder,jsha/boulder,jcjones/boulder,jcjones/boulder,sophie-h/boulder,jfrazelle/boulder,ZCloud-Firstserver/boulder,lucasallan/boulder,ZCloud-Firstserver/boulder,jcjones/boulder,jfrazelle/boulder,letsencrypt/boulder,patf/boulder,ZCloud-Firstserver/boulder,sophie-h/boulder,patf/boulder,sophie-h/boulder,benileo/boulder,jfrazelle/boulder