* Move files from keystone folder into appropriate folders
* Move tests from keystone into appropriate folders
* Fix imports to use the new module locations
* Add a _i18n.py to help with localication
* Add a BaseTestcase class
* Add a exceptions module
All just enough to run the tests. Though some tests were commented
with a FIXME to be fixed in later commits.
A few additional tests were not working with py34 and they are
skipped using testtools.skipIf statements.
Change-Id: Ib494d2a960cab5959c2adaca1eb0739fe65d14f1
864dfacced