image_raw remap causes stereo multicamera to fail

[mcamurri]

When changing the name from image_raw to image_color here in order to be consistent with the real hardware output, the simulated stereo processing slows down a lot.

I thought it was a problem with the stereo processing, until I've realized that the generated stereo images go up to 600 Hz when changing the name.

Note that this happens even when I set the correct update rate to 10 Hz, here.

As a consequence, I believe that the stereo processing node fails because of too many images to process.

I've opened a anwers ROS here.

Related to #4

[mcamurri]

The issue was caused by auto loop feeback. The stereo proc already produces the data we need.