Use TLS for the cert-find operation
    
    The goal is to avoid using HTTP where possible and use TLS everywhere.
    This provides not only privacy protection but also integrity protection.
    We should consider any network except localhost as untrusted.
    
    Switch from using urllib.request to dogtag.https_request.
    
    https://pagure.io/freeipa/issue/7027
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>