ipa_generate_password algorithm change
    
    A change to the algorithm that generates random passwords
    for multiple purposes throught IPA. This spells out the need
    to assess password strength by the entropy it contains rather
    than its length.
    
    This new password generation should also be compatible with the
    NSS implementation of password requirements in FIPS environment
    so that newly created databases won't fail with wrong authentication.
    
    https://fedorahosted.org/freeipa/ticket/5695
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>
    Reviewed-By: Petr Spacek <pspacek@redhat.com>