-additional refactoring from changes in s-c-commons

This reverts commit 90d6490f.

This reverts commit 088afa6d.

This reverts commit 3c1a23e7.

This reverts commit 258e53a4.

Fix issue gh-1054

fixes gh-1081

Spring MVC Feign Contract did not support parameter name fallback
for the #value() attributes of known parameter annotations. Makes
this feature available when the interface has been compiled with
the Java 8 -parameters compiler arg

Fixes gh-835

Fixes gh-710

Added spring-cloud-starter-archaius so downstream projects
like consul and zookeeper don't need to maintain the list of
archaius depenencies.

fixes gh-765

This move should be transparant to users of spring-cloud-starter-eureka.

fixes gh-579

This reverts commit 721fdc59.

The aspectjweaver jar includes all of aspectjrt, and the former is
used at runtime in a number of places (tests fail if you remove
it). Both are not needed so we have picked one (the other one than
recommended in gh-666).

Fixes gh-666

* For Java 8 users, Spectator is the recommended metrics library as Servo is now deprecated in favor of Spectator
* Servo support now needs to be specifically enabled via @EnableServo, even if servo-core is included on the classpath
* Added starter modules for both Spectator and Atlas support
* ServoMetricReader defines a convention for mapping tag-based metrics to hiearchical names for rendering by the Actuator /metrics endpoint