add two expected failures testcases.
add two expected failures testcases.

lisongmin/argcomplete,neizod/argcomplete,kislyuk/argcomplete,lisongmin/argcomplete,neizod/argcomplete,douglas-larocca/argcomplete,landonb/argcomplete,kislyuk/argcomplete,douglas-larocca/argcomplete,landonb/argcomplete