Shorter and nicer output for tp test

[alvagante]

Before submitting your PR

1. Open an issue and refer to its number in your PR title
2. If it's a bug and you have the solution, go on with the PR!
3. If it's an enhancement, please wait for our feedback before starting to work on it
4. Please run puppet-lint on your code and ensure it's compliant

After submitting your PR

1. Verify Travis checks and eventually fix the errors
2. Feel free to ping us if we don't reply promptly

[alvagante]

	3 Warnings
⚠️	There’re changes in manifests, but not tests. That’s OK as long as you’re refactoring existing code.
⚠️	Unless you’re refactoring existing code, please update CHANGELOG.md.
⚠️	Big PR! Big changes, big things may happen! Check them.

	1 Message
📖	There are changes on Hiera data files. They will probably affect one or more params.

Here's an example of a CHANGELOG.md entry:

* [#51](https://github.com/example42/puppet-tp/pull/51): Shorter and nicer output  for tp test - [@alvagante](https://github.com/alvagante).

Generated by 🚫 Danger

[coveralls]

Coverage remained the same at 96.701% when pulling 0b465ba on short_tptest into c6a263a on master.