fix hint tests since the error message output has changed in 2.5.4+
fix hint tests since the error message output has changed in 2.5.4+

rahuldhodapkar/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,jorol/mongo-perl-driver,rahuldhodapkar/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver,dagolden/mongo-perl-driver,jorol/mongo-perl-driver,kainwinterheart/mongo-perl-driver,dagolden/mongo-perl-driver,gormanb/mongo-perl-driver,jorol/mongo-perl-driver,xdg/mongo-perl-driver,gormanb/mongo-perl-driver,rahuldhodapkar/mongo-perl-driver,kainwinterheart/mongo-perl-driver,mongodb/mongo-perl-driver,gormanb/mongo-perl-driver,rahuldhodapkar/mongo-perl-driver,gormanb/mongo-perl-driver,kainwinterheart/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,kainwinterheart/mongo-perl-driver,jorol/mongo-perl-driver