Updated Smoke Tests for RSDK 1.1.0 and Indigo

- Updated Version Parsing
- Added 1.1.0 tests
- Updated python OpenCV deps to use cv2
- Updated camera opening / closing protocol
  due to changes only allowing two cameras to be
  powered at the same time. Now we need to look at
  the ROS services to see if a camera is being powered
  and if not, power down a different camera to power
  the camera of interest up
Merge pull request #21 from RethinkRobotics/smoke_tests_indigo_update

Updated Smoke Tests for RSDK 1.1.0 and Indigo