BIND 10 #3354: Add bool configuration parameters to enable/disable forward and reverse updates to D2

[BIND 10 Development]

#3354: Add bool configuration parameters to enable/disable forward and reverse
updates to D2
-------------------------------------+-------------------------------------
            Reporter:  tmark         |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  medium        |                    Milestone:  New
           Component:  dhcp-ddns     |  Tasks
            Keywords:                |                   Resolution:
           Sensitive:  0             |                 CVSS Scoring:
         Sub-Project:  DHCP          |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  12            |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by tmark):

 This should be probably be done at the directional level as well as the
 individual domain level.

 A direction is globally disabled if there are no DDNS Domaians in that
 direction OR there are
 but DDNSDomain.enabled is false.

 A DDNS Domain itself is disable if there are NO DNS servers for it or
 DNSServer.enabled is false.

 This is allows a lease to be granted for a zone that has forward DNS but
 does not want reverse DNS.  You would define the reverse domain for that's
 zone's address but give it NO
 servers and/or disable it

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Ticket URL: <http://bind10.isc.org/ticket/3354#comment:1>
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