Log Message:
Update net/rabbitmq to 3.6.9.

Management and Management Agent Plugins
- Security Vulnerability Patches
  - CVE-2017-4965: XSS vulnerabilities in management UI
  - CVE-2017-4966: authentication details are stored in browser-local
    storage without expiration
  - CVE-2017-4967: XSS vulnerabilities in management UI
- Bug Fixes
  - Certain TCP and TLS listener configuration settings could break
    JSON serialisation of GET /api/overview responses.

Federation Plugin
- More numerical types are now handled for the "hops" property.

.NET Client
- Calling ExchangeBind more than once with the same arguments threw an
  exception.