DNS Zone UI: added new attributes
    
    New attributes were added to DNS zone details facet.
    
    Attributes:
        idnsallowquery
        idnsallowtransfer
        idnsforwarders
        idnsforwardpolicy
        idnsallowsyncptr
    
    New network address validator created for idnsallowquery and idnsallowtransfer attributes.
    
    Network address validator also added to dnszone adder dialog - from_ip field.
    
    https://fedorahosted.org/freeipa/ticket/2351