ignition-fuel-tools4 4.1.0 (#975)
ignition-fuel-tools4 4.1.0 (#975)

* ignition-fuel-tools4: update 4.1.0

* ignition-fuel-tools4: update 4.1.0 bottle.

osrf/homebrew-simulation,scpeters/homebrew-simulation,j-rivero/homebrew-simulation