fixes gh-584

fixes gh-570

fixes gh-576

* feign-compression-docs:
  Feign compression documentation

* pull577:
  Use instanceof for better readability

* pull575:
  Use "<>" and use isInfoEnabled

Similar to @RibbonClient

fixes gh-288

https://github.com/Netflix/Hystrix/pull/921

Still a release candidate (not yet GA), but seems to work, so we'll
try and update before Spring Cloud is released again.

Fixes gh-546, fixes gh-567, fixes gh-553 (probably)

* feign-content-encoding-snapshot:
  Feign request/response gzip compression

fixes gh-561

Specifically CloudEurekaInstanceConfig where needed.

see gh-302

Other Ribbon clients in Spring Cloud use a ServerIntrospector
to check if the Server wanted to be secure. This change levels things
up (and makes the Spring Feign Client a lit easier to customize).

See gh-414

Most clients send "Transfer-Encoding: chunked" so this isn't often
an issue, but if they don't (e.g. if you use "-H Expect:" with
curl) then it's not a great idea to slurp it all into memory.

Fixes gh-563

When using Ribbon the hystrix config and metrics are namespaced
as "RibbonCommand" (via the group key). the command key can then be
serviceId, making it easier to remember how to configure
Ribbon and Hystrix.

Fixes gh-329

DRY

Allows ribbon load balancer implementations to answer questions like isSecure(Server).

Allows ribbon load balancer implementations to answer questions like isSecure(Server).

There are usually some hints available, especially if the Server
came from Eureka. Unfortunately Server on it's own doesn't contain
enough information (why?), but as a fallback we can guess that
anyone using port 443 is secure.

Fixes gh-459

fixes gh-417

Clicking running instances in eureka admin page

When click one of the up and running instances this should open the actual instance in separate tab

If the configserver registers with securePortEnabled=true we should
respect that in the discovery process.

Fixes gh-450