qa/1251: openSUSE Leap 15.1 fallout
qa/1251: openSUSE Leap 15.1 fallout

Looks like that by default, mandb(1) has not been run, so no man
page index, so this test has no chance of passing.

Add _notrun test for "man -k ls" and add Note describing how this
might be fixed.

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