Vertx and SimplePush integration tests execution issues

I think that we should enforce the Travis build environment to use Oracle JDK 1.7.0 since both Vert.x and netty (https://github.com/danbev/netty) require it.

I received a timeout during execution of Vert.x integration tests, locally and this happened because I was using JDK 1.6.0. The same timeout occured in the Travis build, triggered by a PR (https://travis-ci.org/aerogear/aerogear-js/builds/25614782).

And something more. I cannot find a message inside Travis logs (even previous successful builds), which indicates that the simplepush integration tests have been executed, nor the message "Server started" for SPS which should have been printed according (https://github.com/aerogear/aerogear-js-integration/blob/master/servers/simplepush/server.sh#L40) For activemq & vertx tests a message like the following is being printed:

Running "integration-activemq" task�

I would expect to see a grunt log like:

Running "integration-simplepush" task�

In my local environment I faced the same issue with SPS and the server started only after installing Oracle JDK 7 and killing a process which was using the port 7777.

Could someone from QE take a look and verify the above?