message: fix unit test. There was a floating point precision issue
  The centroid that determines the shift of the layer was rounded from 2.5
  2.5 2.5 to 2 2 3
diff: @@ -19,8 +19,8 @@ class LayerUtilsTest : public ::testing::Test,
  SimulationWorld simulation;
  Point lower_bound, upper_bound;
  - lower_bound << -0.5, -0.5, -0.5;
  - upper_bound << 1.0, 1.0, 1.0;
  + lower_bound << -0.51, -0.51, -0.51;
  + upper_bound << 0.9, 0.9, 0.9;
  expected_new_coordinate_origin_ << 0.16, 0.16, 0.16;
  simulation.setBounds(lower_bound, upper_bound);
  