Init ros node before getting parameters
Init ros node before getting parameters

Fix a problem where the pip and pport parameters are always set to their
default values when using the parameter server and not command line arguments.

ros-naoqi/naoqi_bridge,lsouchet/naoqi_bridge,ros-naoqi/naoqi_bridge,vrabaud/naoqi_bridge,lsouchet/naoqi_bridge,vrabaud/naoqi_bridge,ArthurVal/RIDDLE_naoqi_bridge,suryaambrose/naoqi_bridge,ArthurVal/RIDDLE_naoqi_bridge,suryaambrose/naoqi_bridge