Tweak text_console_login match area
    
    On Rawhide Cloud_Base boots, there's some SSH key and network
    information printed above the 'login:' prompt, so we can't
    expect empty space there. Also tweak console_login() to clear
    the screen after logging in, so the login prompt is cleared and
    doesn't confuse things on subsequent runs (like it did first
    time we tried this). And add a new user logged in needle, as it
    seems after we clear the screen the tilde appears in a slightly
    different position and the existing needle doesn't match.
    
    https://openqa.fedoraproject.org/tests/489003#step/_console_wait_login/7
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>