Trafficcontroller keeps connections open after slow consumers events

[Travis Patterson]

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Steps to reproduce:

• use a slow_consumer available in loggregator-tools with a read interval of 10 seconds
• Observe the slow_consumer event from trafficcontroller
• The slow_consumer continues to read messages

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/163097049

The labels on this github issue will be updated when the story is started.

[Travis Patterson]

We've announced the deprecation of the TrafficController. Users should subscribe to the RLP or RLP-gateway instead and use it's metrics.