Set 'idnssoaserial' to deprecated
    
    A warning message (regarding the SOA serial deprecation) is shown
    on the webui and CLI every time a new DNS zone is added (even if the
    '--serial' option is not being explicitly set) or the SOA serial is modified.
    
    This should be managed by setting the 'idnssoaserial' as deprecated and
    not required parameter.
    
    Fixes: https://pagure.io/freeipa/issue/9249
    Signed-off-by: Carla Martinez <carlmart@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Rafael Guterres Jeffman <rjeffman@redhat.com>