Fixed recipe to test all modules
This package is not been tested properly.
For instance, when you do nosetests -sv bob.rppg.base only the tests under bob.rppg.base are tested.
However, this package has more submodules (chrom, cvpr14, ssr).
Hence, in order to run all test we need to do nosetests -sv bob.rppg.
By doing that you will see that some tests are failing.
This MR allows us to run all the test, but doesn't fix them :-)
Can someone please look at it?
ping @andre.anjos @heusch
thanks