* Fixes PyLint to run in the virtualenv used for all tests
* Replaced 'LooseVersion' with 'parse_version' from setuptools
- This is a work around for the issue in
https://github.com/PyCQA/pylint/issues/73 in which pylint can not
import disutils.version correctly in a virtualenv.
* Removed the unused function 'delete_hosts' which was causing a
pylint error as well
* Removed a deprecated pylint pragma option, 'bad-builtin'
* Fixed some import ordering issues it was picky about
* Added another disable for a case where the PyLint suggestion would
have us altering the container we would be iterating over
* Add code-coverage reports to the unittests with the MINIMUM coverage
percentage for success set to 70%
- Current test coverage is at 76%