qa/1059: work around possible lack of lsof(1)
qa/1059: work around possible lack of lsof(1)

Workaround is a bit generous, just fake one part of the test if there
is no lsof.

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp