We need to still assert that the FeignClient is valid (no name and
value specified together for instance). Added missing tests.

There is a utility method in Spring that we can use to merge all
the aliases. That way 4.2 and 4.3 behave the same way.

Fixes gh-1192

Disable cookie management for RibbonLoadBalancingHttpClient Fixes gh-301

Upgrade Eureka to 1.4.10

fixes gh-1175

This reverts commit 931f0580.

Upgrade Eureka to 1.4.9

Adds property zuul.sslHostnameValidationEnabled to be able to disable the hostname validation in the simpleHostRoutingFilter

fixes gh-1057

Previously ProxyRequestHelper contained a TraceRepository field. This caused zuul apps to fail with a class not found exception if they excluded actuator. This splits TraceRepository functionality into a new TraceProxyRequestHelper that extends ProxyRequestHelper. Auto configuration creates the appropriate ProxyRequestHelper based on the existence or not of actuator classes.

fixes gh-1135

Also added descriptions to properties.

fixes gh-1131

* schemeless-uri:
  Without explicit client config of IsSecure, lookup from registration

instead of defaulting to false.

Fixes gh-1126

Zuul sets an empty entity for GET requests. The apache http client either sets transfer encoding to chunked or a content length header. This change sets the apache entity contentLength to 0 (not the header), to that in RequestContent the "content-length" header is set to 0 rathern than transfer encoding.

See gh-1042

fixes gh-1113

See https://github.com/Netflix/Hystrix/issues/1251

If the content length isn't set on the entity, when http client determines which header to set, it sets transfer-encoding to chunked rather than content-length.

This fixes a missing content-length issue when using `HttpClientRibbonCommandFactory`.

See gh-1042

Updates so CloudJacksonJson extension is properly recognized by Eureka
Server as LegacyJacksonJson.

see gh-978
fixes gh-1111

It isn't very helpful to have a Collection converted to a String
anyway. We need to implement something new in Feign to apply
the converter (expander) to individual elements in the collection
but this change should get back to the old behaviour with
List<String> at least.

Fixes gh-1115

fixes gh-1110