D-16104 Deproxy 0.17

This pull request is necessary to support D-16104. 

This pull request updates the spock test dependency from gdeproxy 0.16 to deproxy 0.17. The new version of deproxy has a different name for the project, artifact id, and packages. Also, the makeRequest method has a different method signature. This pull request takes those changes into account. All org.rackspace.gdeproxy imports have been changed to org.rackspace.deproxy. The artifact id and version number have been changed in the pom. All references to makeRequest have been changed to use named parameters.