To enable EUreka-first bootstrap.

See gh-42

Fixes gh-42

See gh-42

It works quite well locally actually. I tested with hostnames
127.0.0.1 and 127.0.1.1 and 2 servers running on localhost.

See gh-28

Fixes gh-46

All static content is excluded in the Jersey config, so we can use
/eureka for the prefix to the Eureka API (i.e. /apps etc.)

Fixes gh-44

Unfortunately only properties that have been set show up (unlike
/configprops), but possibly better than nothing. You can see some
in the Eureka server or in the customers sample (once it has
tries to contact the stores service and Ribbon is up and running).

Fixes gh-38

See gh-39

/v2/* -> /eureka/api/*

The prefix can't be /eureka because we use that for static
resources. Note that the "api" prefix gets passed to the
Jersey resources as a "version" (and defaults to "v2" when
it can't be parsed).

Fixes gh-41

I prefer to keep the actual components free of autowiring, so they
are easier to navigate in an IDE (i.e. you can see how they are
constructed)

 Specifically RequestParam, PathVariable and RequestHeader

 fixes gh-36

gem install asciidoctor

create SpringClientFactory for ribbon to not fail on client creation if LoadBalancer is already created.  SpringClientFactory is not a static factory, but an instance factory.

Remove unused hystrix configuration classes.

This makes perfect sense since there is already support in the API.
Unfortunately Eureka also uses that information to set the Server
zones by default (duh?!) - see DiscoveryClient.getZone(InstanceInfo),
so unless you aggressively update them, the zones will all be the same
in all servers.

I fixed that problem by unconditionally applying the "domain as zone"
guess algorithm, which is fine unless you actually want to use
the Amazon metadata. So that's an outstanding problem

See gh-30

A EurekaInstanceConfig can declare a "zone" in its metadataMap, and then
it will be matched by the RibbonLoadBalancerClient. The zone of a server
is derived from the hostname - it is the whole host name or the host name
excluding the least significant subdomain (period separated identifier).

Fixes gh-29