fixes gh-1087

* fix-query-string-in-class-requestmapping:
  Support path parms in Class @RequestMapping for feign

This commit adds the support to SpringMvcContract for path parameters
defined in the class' @RequestMapping Annotation that is applied to all
methods of a feign interface.

fixes gh-1023

Fixes gh-936

Fixes gh-1084

* Added missing error code for SimpleHostRoutingFilter
* Added missing error code for RibbonRoutingFilter

fixes gh-1051

So that it can handle multi-part requests that do not have a
file name.

Fixes gh-1067

Fixes gh-1076

Fixes gh-1080

fixes gh-1074

* fix-hardcoded-path-encoding:
  Fixed the path encoding in ProxyRequestHelper when the character encoding was specifically set on HttpServletRequest.

Fixed the path encoding in ProxyRequestHelper when the character encoding was specifically set on HttpServletRequest.

When the character encoding was set to UTF-8 for example, the path was correctly decoded in PreDecorationFilter but was reencoded in ProxyRequestHelper using the Servlet default ISO-8859-1. This commit uses the character encoding when set and fallback on default.

* pull979:
  Use request.characterEncoding prior to default encoding

fixes gh-647

* issue-1041-fix:
  Enables Hystrix metrics poll interval config.

Fixes gh-1041

* patch-1:
  Support header placeholders in SpringMvcContract.