qa/972 - zswap pmda won't work with python versions before 2.5
qa/972 - zswap pmda won't work with python versions before 2.5

Not run it on older python versions

andyvand/cygpcpfans,wuliming/pcp,mbaldessari/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,adfernandes/pcp,andyvand/cygpcpfans,edwardt/pcp,prasincs/pcp,prasincs/pcp,wuliming/pcp,adfernandes/pcp,aeg-aeg/pcpfans,wuliming/pcp,adfernandes/pcp,wuliming/pcp,adfernandes/pcp,edwardt/pcp,edwardt/pcp,aeg-aeg/pcpfans,tjanez/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,adfernandes/pcp,aeg-aeg/pcpfans,tjanez/pcp,prasincs/pcp,andyvand/cygpcpfans,tjanez/pcp,mbaldessari/pcp,aeg-aeg/pcpfans,andyvand/cygpcpfans,mbaldessari/pcp,mbaldessari/pcp,tjanez/pcp,aeg-aeg/pcpfans,tjanez/pcp,wuliming/pcp,adfernandes/pcp,mbaldessari/pcp,edwardt/pcp,prasincs/pcp,mbaldessari/pcp,edwardt/pcp,wuliming/pcp,prasincs/pcp,edwardt/pcp,edwardt/pcp,tjanez/pcp,prasincs/pcp,tjanez/pcp,adfernandes/pcp,prasincs/pcp,wuliming/pcp,wuliming/pcp,andyvand/cygpcpfans,edwardt/pcp,aeg-aeg/pcpfans,adfernandes/pcp,prasincs/pcp,tjanez/pcp,andyvand/cygpcpfans