Kenny Sharma authored Aug 11, 2017 and Hossain Mahmud committed Nov 28, 2017

This patch sets the default camera publishing to 30 fps. Previously,
it was set to 0.0 which means infinite to the GazeboRosPackages
libgazebo_ros_camera plugin. In testing, the Husky would publish
~3000 images in 3 seconds which would end up in simulation recordings.

Change-Id: Iedc9b38e73e9652f50b61a124b4eb945fe7bcd71