In order to fix issue with TPS in hystrix-dashboard threadpool section, removing average calculation for propertyValue_metricsRollingStatisticalWindowInMilliseconds. This was done for hystrixCommand.js previously but not for hystrixThreadpool.js.

- The eureka instance auto registration also changes the secure port when the server port is random (0)

Fixes gh-2303

Update documentation to reflect https://github.com/spring-cloud/spring-cloud-netflix/issues/1048

* Add new Zuul filters endpoint and refactor routes endpoint
* Refactor FiltersEndpoint
- Extend from AbstractEndpoint and simplify code
- Move tests classes into package endpoint
- Remove usage of Lombok
* Conditionally enable Zuul routes and filters endpoints
* Provide FilterRegistry to FiltersEndpoint via constructor

Extract separate class TurbineClustersProvider to be able to provide custom solution for retrieving configured clusters (#2219)

See https://github.com/spring-cloud/spring-cloud-commons/issues/265

see https://github.com/Netflix/archaius/pull/522

Port information was missing from data sent to eureka.

fixes gh-2372

The message has to be sent after the endpoint starts up, which only
happens after the first request is accepted, so we put that logic
in the response extractor.

* Allow init params to be set on ProxyStreamServlet.

Fixes gh-2301

* Added unit test for #gh-2301