Treat failure to source bash profile as a soft fail
    
    There's a bug in current Rawhide causing sourcing of /etc/bashrc
    to fail when logging in as a regular user. This results in the
    bash prompt looking different, which is currently a hard fail,
    and causes most tests to die. It's better to treat this as a
    soft fail so the rest of the test can run. So add a needle to
    spot this case, and a little finish function the console login
    function calls whenever it's successfully logged in, to check
    whether it got the no-profile prompt and register a soft fail.