fixes gh-415

* pull434:
  Build query string from context instead of original request

Recreate query string from either getCurrentContext().getRequestQueryParams()
or original request as fallback. This allows to override query string
params in pre filters.

fixes gh-426

* feign-8.6.0:
  Updated feign version to 8.6.0

Remove unfinished sentence

Fix escaping

Fix minor typo in doc

Should be approximateZoneFromHostname instead of approximateZoneFromDomain.

The flag has always been there, it just isn't carried through to the ribbon client configuration
without this change if I understand this change correctly.

Fixes gh-315, fixes gh-423.

Fix grammar issue in doc

fixes https://github.com/spring-cloud-samples/turbine/issues/3

Fixed typo in ignoredServices

This reverts commit 06d4d1e1.

Corrected example of providing Turbine cluster name via instance metadata map

Mark an instance as DOWN when the application context is stopped.

* zuul-unescaped-paths:
  Fix unescaped paths in SimpleHostRoutingFilter.

Move common code so RibbonRoutingFilter can use the same code.

Fixes gh-407

* issue-394-remove-deflate:
  Removed deflate accept-encoding from outbound requests

Scan classpath for Jersey resources with Spring and initialize the
Jersey filter with a jaxrs Application instead. (Fixes gh-399,
fixes gh-400)

Fixes gh-377