upgrade: add replica bind DN group check interval to CA topology config
    
    Without this attribute explicitly set the replication plugin won't recognize
    updates from members of 'replication managers' sysaccount group, leading to
    stuck replica CA installation.
    
    https://fedorahosted.org/freeipa/ticket/6508
    
    Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>