Switched to ArpNetworking parent pom and upgraded dependencies

[vjkoskela]

No description provided.

[BrandonArp]

Will merge when you fix the build.

[vjkoskela]

Brandon, the issue here seems to be a race condition in the tests. I have been unable to repro it on my machine, but am still tracing through the tests and code looking for it. Will update once I find it or give up and just disable concurrent test execution (definitely not the preferable outcome).

[vjkoskela]

Alright, I've spent way too long on this. Since the tests were not executed in parallel prior to the parent pom migration I've simply disabled parallel execution by overriding the Surefire configuration from the ArpNetworking parent pom. We should definitely still investigate and resolve this issue as it could indicate a problem in the code (not necessarily in the tests). To this end I've filed issue #22.