Log Message:
Update net/rabbitmq to 3.6.5.

3.6.5
- Bug fixes

3.6.4
- Bug fixes
- Erlang 19.0 compatibility
- Usability improvements

3.6.3
- Important bug fixes
- systemd support in the Debian package
- New OpenGPG key used for artifact signing
- New plugins included into the distribution
- Usability improvements

3.6.2
- Bug fixes
- New statistics collector in management plugin
- Usability improvements