Previously, we captured and displayed shorter error messages for the
more complicated and unnecessarily verbose messages which npm produced.
While updating npm to 4.4.4, I observed the changelog for 4.4.0
indicated it would now produce less verbose messages. In searching for
possible Meteor conflicts with this, I discovered that
`installNpmModule` had already regressed on providing pretty messages.
This fixes those messages to be parsed properly and adds tests which
ensure if npm changes again that we can capture them.
Follows-up on: https://github.com/meteor/meteor/pull/8562
27819a164b