kinova_ros files need to be updated

[asaran]

When setting up the PoliV2 codebase (Section 2.3, Example 2.5) in the documentation, I ran into errors with catkin_make as below:
error: cannot convert ‘moveit::planning_interface::MoveItErrorCode’ to ‘bool’

I could resolve the issue with the link here: moveit/moveit#759
I had to replace 'bool' with 'moveit::planning_interface::MoveItErrorCode' in the following 3 files:

1. ~/catkin_ws/src/kinova_ros/kinova_moveit/kinova_arm_moveit_demo/include/pick_place.h (line 77)
2. ~/catkin_ws/src/kinova_ros/kinova_moveit/kinova_arm_moveit_demo/include/test_accuracy.h (line 80)
3. ~/catkin_ws/src/kinova_ros/kinova_moveit/kinova_arm_moveit_demo/src/motion_plan.cpp (line 76)

[asaran]

Modified the kinetic_7dof branch of the fork under si-machines. But do not have access rights for the GT-RAIL fork, from where kinova_ros is pulled automatically when setting up the codebase on Moe. Once the arm_driver fix branch of si-machines/poli2 is merged into master, this should be fixed as the si-machines fork of kinova_ros will be used to setup the codebase on Moe (via the command 'sudo apt-get purge ros-kinetic-dynamixel-workbench-toolbox).