rail_maps: 0.2.2-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rail_maps` to `0.2.2-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `0.2.1-0`

## rail_maps

```
* Merge pull request #2 from Spkordell/develop
  Added new map for rail lab
* Added new map for rail lab
* fixed dox file
* Contributors: Russell Toris, Steven Kordell
```