ExpectProcess and ExpectFunc now take the exit code of the process into
account, not just the matching of the tty output.
This also refactors the many tests that were previously succeeding on
matching an output from a failing cmd execution.
Signed-off-by: Thomas Jungblut <tjungblu@redhat.com>
It doesn't make sense to always pass a AuthConfig parameter for
test cases which do not enable auth at all. So refactoring the
Client interface method so that it accepts a `ClientOption`
variadic parameter.
Signed-off-by: Benjamin Wang <wachao@vmware.com>