geometry_experimental: 0.5.6-0 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `geometry_experimental` to `0.5.6-0`:

- upstream repository: https://github.com/ros/geometry_experimental.git
- release repository: https://github.com/ros-gbp/geometry_experimental-release.git
- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `0.5.5-0`

## geometry_experimental

- No changes

## tf2

- No changes

## tf2_bullet

- No changes

## tf2_geometry_msgs

- No changes

## tf2_kdl

- No changes

## tf2_msgs

- No changes

## tf2_py

- No changes

## tf2_ros

```
* support if canTransform(...): in python #57 <https://github.com/ros/geometry_experimental/issues/57>
* Support clearing the cache when time jumps backwards #68 <https://github.com/ros/geometry_experimental/issues/68>
* Contributors: Tully Foote
```

## tf2_tools

- No changes