ros: 1.12.0-0 in 'jade/distribution.yaml' [bloom]

Increasing version of package(s) in repository `ros` to `1.12.0-0`:

- upstream repository: https://github.com/ros/ros.git
- release repository: https://github.com/ros-gbp/ros-release.git
- distro file: `jade/distribution.yaml`
- bloom version: `0.5.16`
- previous version for package: `null`

## mk

- No changes

## rosbash

- No changes

## rosboost_cfg

- No changes

## rosbuild

- No changes

## rosclean

- No changes

## roscreate

- No changes

## roslang

- No changes

## roslib

```
* update ROS_DISTRO to jade
```

## rosmake

- No changes

## rosunit

- No changes