webui: Add name to 'Certificates' table
    
    For testing purposes and uniformity, the 'Certificates'
    table generated after a new certificate is added should
    also have the 'name' attribute to be able to access its
    value.
    
    Fixes: https://pagure.io/freeipa/issue/8946
    Signed-off-by: Carla Martinez <carlmart@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
    Reviewed-By: Mohammad Rizwan Yusuf <myusuf@redhat.com>