rail_maps: 0.2.4-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rail_maps` to `0.2.4-0`:

- upstream repository: https://github.com/WPI-RAIL/rail_maps.git
- release repository: https://github.com/wpi-rail-release/rail_maps-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `0.2.3-0`

## rail_maps

```
* Maps of new RAIL Lab
* Contributors: Russell Toris
```