Ticket 48895 - tests package should be noarch
    
    Bug description:
    389-ds-base-tests has builds for all architectures, though it contains
    only python scripts. It should be noarch instead.
    
    Fix description:
    Change BuildArch for 389-ds-base-tests package to noarch.
    
    https://fedorahosted.org/389/ticket/48895
    
    Reviewed by: wibrown@redhat.com.