BIND 10 #1579: Update database ZoneFinder::find() for negative cases of NSEC3-signed zones

[BIND 10 Development]

#1579: Update database ZoneFinder::find() for negative cases of NSEC3-signed zones
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |                       Status:  new
            Priority:  major         |                    Milestone:  Year
           Component:  data source   |  3 Task Backlog
           Sensitive:  0             |                     Keywords:
         Sub-Project:  DNS           |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 See #1578.  For now it's in backlog due to priorities.

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Ticket URL: <https://bind10.isc.org/ticket/1579>
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BIND 10 Development