Fixes gh-306

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.

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

This reverts commit 0d468b39.

ref gh-383

fixes gh-374

See gh-377

fixes gh-375

fixes gh-372

fixes gh-370

Should be no change for users of Boot 1.2 right now, but with this
patch it is possible to use 1.3 with the new conventions for metrics
(e.g. in particular exporting by declaring beans of type
MetricWriter)