robot_model: 1.10.21-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `robot_model` to `1.10.21-0`:

- upstream repository: https://github.com/ros/robot_model.git
- release repository: https://github.com/ros-gbp/robot_model-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.14`
- previous version for package: `1.10.20-0`

## collada_parser

```
* fix rotation of joint axis when oriantation between parent link and child link is differ
* Contributors: YoheiKakiuchi
```

## collada_urdf

- No changes

## joint_state_publisher

```
* Added floating joints to joint types ignored by publisher
* Contributors: Shaun Edwards
```

## kdl_parser

- No changes

## resource_retriever

- No changes

## robot_model

- No changes

## urdf

- No changes

## urdf_parser_plugin

- No changes