Move tests to project root

Implements: blueprint tests-in-root

Change-Id: I6a1dbc59720abcaafb6fd9b8585f3f6065dcde92
Add public api to get authentication info from client

auth info (in particular token and endpoint_url) can be reused
in different quantum client instances to reduce roundtrips with keystone

fixes bug 1150051

Change-Id: I3b2f23f364099bdb08992130d5edb87222e8d387
Merge "Move tests to project root"