PERL-927 Skip count hint test before MongoDB 3.6
PERL-927 Skip count hint test before MongoDB 3.6

mongodb/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,dagolden/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver,xdg/mongo-perl-driver