remove --quiet to enable debugging when the install step times out

Sometimes the build fails because it times out in "install"

```
$ mvn install --quiet -DskipTests=true -B
No output has been received in the last 10 minutes, this potentially indicates a stalled build or something wrong with the build itself.
The build has been terminated
```

because of --quiet it is not possible to know what it is actually hanging on.

example of such a build:
https://travis-ci.org/Parquet/parquet-mr/builds/7162751