tf2_web_republisher: 0.2.1-0 in 'groovy/distribution.yaml' [bloom]

Increasing version of package(s) in repository `tf2_web_republisher` to `0.2.1-0`:

- distro file: `groovy/distribution.yaml`
- bloom version: `0.5.2`
- previous version for package: `null`

## tf2_web_republisher

```
* cleanup
* ROS version checked for tf2 API namespace
* Contributors: Russell Toris
```