Adds Rackspace auth

* Added extensions package
* Implemented RAX 2.0 auth. Not sharing classes
  with Keystone as the two will probably diverge

Change-Id: I64867496abbf8207654a957d58a6ca4ea4d7ec6b
Start of resolving pep8 issues

* Minor pep8 fixes

Change-Id: I411896ba4e2afa670474d2f851ab4dd98660f15b
Fixes/modifications around server actions tests

* (Temp fix) Re-added remote client behaviors
* Modified remote client methods to take a config param
* Added missing imports to servers client
* Fixed naming issues with request objects

Change-Id: I81cef24bf9d10a2b050bb1f89d01931201e1098f
Merge "Adds Rackspace auth"
Merge "Start of resolving pep8 issues"
Merge "Fixes/modifications around server actions tests"
Fixing import in rax auth base class

* Corrected import in base.py of rax_auth

Change-Id: I653b90b549fefad819ab101a8e3cc39ae58ce249
Adds additional comfigurations for compute

* Added config for compute admins
* Added secondary user for authorization tests

Change-Id: I223b23f0af49c71826c1f1fdae4454ac06bfa583