A pull request to fix all unittest issues

[sarathsreedharan]

Previously the unittests expected a dummy healthcheck to be already in place in the /tmp directory, have modified the test setup function to copy a dummy healthcheck to the /tmp/ location before each test

[MayureshGharat]

Thanks @sarathsreedharan

[anhvngo]

is this fixed ? i am still seeing the error: for module in sys.modules.itervalues(): RuntimeError: dictionary changed size during iteration

[sarathsreedharan]

Are you seeing this issue while running unittest? Can you tell me which unittest is producing this error and what version of python you are using?

[sarathsreedharan]

Looks like this is the same issue as #6, will raise a pull request to update the document to reflect the use nosetests.