* 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

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

Modfied RibbonCommandContext to make request entity resettable. fixes gh-892

* Remove @EnableDiscoveryClient and @EnableEurekaClient as there are now optional.  Fixes #2241.

According to:

https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/bind/annotation/RequestMapping.html#headers--

the `headers` field can take several formats:

1. Require the header with a concrete value: `"My-Header=myValue"`
2. Require the header with any value: `"My-Header"`
3. Require the header is absent: `"!My-Header"`
4. Require the header with a negated value : `"My-Header!=myValue"`

This fixes `parseHeaders` for cases 2-4 (which previously threw a `StringIndexOutOfBoundsException`).

Fixes gh-1778.

* simplify org.springframework.cloud.netflix.zuul.filters.ProxyRequestHelper#setResponse

* Update ProxyRequestHelper.java

Cause can now be propagated to fallback provider in order to respond accordingly to a exception type.
New interface is introduced in order not to break any existing falback providers.

* Introduce getRoutesMap() so subclasses can have read/write access to configured/discovered routes.

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>

Otherwise useServlet31 was always returning false.

fixes gh-2196

Signed-off-by: João Salavessa <joao.salavessa@sky.uk>

Fixes gh-665

On certain platforms and compilers the generated bytecode is not what
the configuration expected. By moving inner classes to the upper level
and using @Import this will guarantee the proper order.

fixes gh-2086

On certain platforms and compilers the generated bytecode is not what
the configuration expected. By moving inner classes to the upper level
and using @Import this will guarantee the proper order.

fixes gh-2086

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>

Takes advantage of new builder pattern.  Also reverted elimination of properties for feign and ribbon.

Add a parameter to control the level of details returned with the
routes actuator endpoint. If requested, return all available Zuul route
details including ID, prefix, sensitive headers, etc.
Signed-off-by: Gregor Zurowski <gregor@zurowski.org>

* add feign client properties

* configure feign builder from properties if exists

* change string config to class config and add unit test for feign client using configuration properties

* refactoring and add primary flag configuration

* add decode404 in feign client configuration properties

* change unit test properties decode404 to true

* remove lombok from FeignClientProperties and change primary attribute to default-to-properties

fixes gh-1931

* Support for re-writing Location Headers

* Added additional constructor for Route, removed auto-configuration of LocationRewriteFilter

* Polished docs, more tests

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>

* Add options for RibbonCommand to use separate thread pools for hystrix

* Remove lombok annotation and Add getter/setter for ZuulProperties$HystrixThreadPool

* Add doc about how to configure hystrix thread pools in Zuul Developer Guide

* Add testcases for HystrixThreadPoolKey of RibbonCommand

* Tiny change about if block in AbstractRibbonCommand

fixes gh-2063

existing strategy if present. Fixes #2035