Add a local copy of nosetests allowing to run the test suite on EL6

Append to the local nosetests the correct requirements to run the test
suite on EL6 with the appropriate version on SQLAlchemy.
Allow older version of nose as this is what EL6 has
Fix unit-test
Order the results to be consistent accross F19 and EL6
Merge pull request #15 from fedora-infra/local_nosetests

Add a local copy of nosetests allowing to run the test suite on EL6