[test_gripper] Aesthetic fixes
[test_gripper] Aesthetic fixes

ScazLab/baxter_collaboration,ScazLab/human_robot_collaboration,ScazLab/human_robot_collaboration,ScazLab/baxter_collaboration,ScazLab/human_robot_collaboration,ScazLab/baxter_collaboration,ScazLab/human_robot_collaboration,ScazLab/baxter_collaboration