* Fixes double encoding when creating secure URLs.  Fixes #2478.

Document untrusted certificates when connecting to hystrix.stream endpoint

Otherwise useServlet31 was always returning false.

fixes gh-2196

Fixes gh-2125

(Updated okhttp3 from v3.6.0 to v3.8.1)

On certain platforms and compilers the generated bytecode is not what
the configuration expected. By moving inner classes to the upper level
and using @Import this will guarantee the proper order.

fixes gh-2086

On certain platforms and compilers the generated bytecode is not what
the configuration expected. By moving inner classes to the upper level
and using @Import this will guarantee the proper order.

fixes gh-2086

fixes gh-1943

Needed in `EurekaClientConfigBean` because `CloudEurekaTransportConfig` is a separate class.

Fixes gh-2138

fixes gh-2063

Override getThreadPool from HystrixConcurrencyStrategy and delegate to

existing strategy if present. Fixes #2035

This allows clients to send batched up events in the same format as
before (or to continue to send single events). We can switch the
default format to an array in 1.4.x.