Add correct exit value to failed tests
Merge pull request #1824 from mattsta/fix-test-error-signal

Add correct exit value to failed tests
Add Travis CI
Add automated testing for creating clusters

This script will run over 200 cluster creations
on different replica and instance counts.

It currently works on my OS X system and in a Linux VM.
It's designed to work on a CI server so it can just run
in the background and the system will report if the script
fails.
Add cluster bring-up testing to CI configuration
Add Redis cluster test to CI

The more tests the better!