Create a test for app deployment failure propagation

[meltsufin]

See: #91

[jmcc0nn3ll]

I created a simple test for this here:

https://github.com/GoogleCloudPlatform/jetty-runtime/tree/issue-92

However it doesn't fail based on the current state of master, at least by my reckoning. A badly formatted web.xml should result in the failure of the deployment, right?

[meltsufin]

The scenario I've tested was referencing a non-existing class for a servlet definition in web.xml. That did cause a failure during deployment.

[jmcc0nn3ll]

that works, I'll update the test and look into why the other way wasn't working

[jmcc0nn3ll]

@meltsufin are you still interested in a test like this? it means another maven artifact in tests

[meltsufin]

Sure, another maven artifact could open a whole can of warms with our current test setup though. We'll need to tackle it at some point anyway.