kwalitee: compatibility with pylint 1.0.0

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
kwalitee: list comprehensions instead of lambdas

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  kwalitee: list comprehensions instead of lambdas
  kwalitee: compatibility with pylint 1.0.0