razer_hydra: 0.0.21-0 in 'groovy/distribution.yaml' [bloom]

Increasing version of package(s) in repository `razer_hydra` to `0.0.21-0`:

- distro file: `groovy/distribution.yaml`
- bloom version: `0.5.9`
- previous version for package: `0.0.11-0`

## razer_hydra

```
* setting groovy-devel tags to increment from 0.0.20
* change ROS_INFO to ROS_DEBUG
  Conflicts:
  src/hydra.cpp
* switching driver time to use WallTime to enable using the driver with sim time.
* prefix targets during build to not collide
* Merge pull request #5 from cottsay/groovy-devel
  Use "Public Domain" license for razer_hydra
* Use "Public Domain" license for razer_hydra
* Contributors: Adam Leeper, Kel Guerin, Scott K Logan, Tully Foote
```