Fix Tf for 3D cameras

[eborghi10]

This PR fixes the kinect plugin for some 3D cameras.

# Don't run gzclient
export GUI=false 
# To debug Tf
export RVIZ_CONFIG=tf 
# Select all the 3D lasers
export LASER=r200 
# Run a simulation with enough features
roslaunch ca_gazebo create_sweet_house_3.launch

TODO:

• [x] Check if real Orbbec is working
• [x] Check Tf relationship of Asus Xtion Pro