A performance test for exercising the server without Netty coming into the picture

Added some more useful headers

The beginnings of build configuration to separate out the performance tests - doesn't work yet though.

Shuffling the chairs

Constrained dependencies for performance tests to the pt scope

Revert "Constrained dependencies for performance tests to the pt scope"

This reverts commit 9fdbfa4d09456c2b6ea6eb81e5adcd37d218417a.