Use testtools as the base testclass. Use fixtures library for managing
fixtures.
Part of blueprint grizzly-testtools
Change-Id: Iac5af286b988787acf7049344641aadf140b9398
* Implement correct certificate verification
* Add --os-cacert
* Rework tests for requests
Pinned requests module to < 1.0 as 1.0.2 is now current in pipi
as of 17Dec2012.
Blueprint: tls-verify
Change-Id: I9a25a94c8dfcaf483c4c8328439809d65cf10b38