Remove FIPS noise from SSHd
    
    When a system is in FIPS mode, SSHd can prints some noise to stderr:
    
        FIPS mode initialized\r\n
    
    This noise causes interference and breakage of some tests. Remove the
    noise from stderr_bytes, which automatically fixes stderr_text, too.
    
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Francisco Trivino <ftrivino@redhat.com>