ros_tutorials: 0.5.0-0 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `ros_tutorials` to `0.5.0-0`:

- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.5`
- previous version for package: `0.4.3-1`

## ros_tutorials

- No changes

## roscpp_tutorials

- No changes

## rospy_tutorials

```
* make rostest in CMakeLists optional (ros/rosdistro#3010 <https://github.com/ros/rosdistro/issues/3010>)
* use queue_size for rospy.Publisher (ros/ros_comm#169 <https://github.com/ros/ros_comm/issues/169>)
* use catkin_install_python() to install Python scripts (#17 <https://github.com/ros/ros_tutorials/issues/17>)
```

## turtlesim

```
* add indigo turtle
* add disabled code to easily spawn all available turtle types
```