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 reverts commit 721fdc59.

Adds support for feign-hystrix

fixes gh-606

Some projects were failing on `./mvnw install` due to a non-existent
local path. This makes all poms use the same approach.