Add dependency on rosserial_python, for the helper node.
Explicitly specify /ros/ in client library include paths, necessary for testing.
Beginnings of test infrastructure for rosserial.
Merge branch 'hydro-devel' of https://github.com/clearpathrobotics/rosserial into hydro-devel
Working test of singular publish test from client.
Add python node test file.
Parameterize ClientFixture to set serial or socket comms mode.
Add serial loopback as well as socket one.
Merge branch 'hydro-devel' of https://github.com/clearpathrobotics/rosserial into hydro-devel