Move client templates to separate directory
    
    PR https://github.com/freeipa/freeipa/pull/1747 added the first template
    for FreeIPA client package. The template file was added to server
    templates, which broke client-only builds.
    
    The template is now part of a new subdirectory for client package shared
    data.
    
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>