rocon_msgs: 0.7.7-1 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rocon_msgs` to `0.7.7-1`:

- upstream repository: http://github.com/robotics-in-concert/rocon_msgs.git
- release repository: https://github.com/yujinrobot-release/rocon_msgs-release.git
- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `0.7.5-3`