print coverage at the end of the test; minor pep8 fixes
print coverage at the end of the test; minor pep8 fixes

kkampardi/Plinth,harry-7/Plinth,vignanl/Plinth,harry-7/Plinth,kkampardi/Plinth,jvalleroy/plinth-debian,vignanl/Plinth,freedomboxtwh/Plinth,jvalleroy/plinth-debian,jvalleroy/plinth-debian,vignanl/Plinth,kkampardi/Plinth,kkampardi/Plinth,kkampardi/Plinth,freedomboxtwh/Plinth,freedomboxtwh/Plinth,freedomboxtwh/Plinth,vignanl/Plinth,vignanl/Plinth,jvalleroy/plinth-debian,jvalleroy/plinth-debian,freedomboxtwh/Plinth,harry-7/Plinth,harry-7/Plinth,harry-7/Plinth