rqt_capabilities: 0.1.2-3 in 'groovy/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rqt_capabilities` to `0.1.2-3`:

- distro file: `groovy/distribution.yaml`
- bloom version: `0.5.9`
- previous version for package: `0.1.2-1`

## rqt_capabilities

```
* put in instrospection plugin group, fixes #12 <https://github.com/osrf/rqt_capabilities/issues/12>
* Contributors: William Woodall
```