BIND 10 #2847: mutable version of DomainTree::find()

[BIND 10 Development]

#2847: mutable version of DomainTree::find()
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                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  Next-Sprint-
                   Priority:         |  Proposed
  medium                             |              Keywords:
                  Component:  data   |             Sensitive:  0
  source                             |           Sub-Project:  DNS
               CVSS Scoring:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 To support deleting RRsets from in-memory data source we need to be
 able to find the corresponding `DomainTree` node, and for that
 we need a mutable version of the find() method.

 In the expected scenario we don't need tricky features like partial
 match, wildcard or zone cut handling, so we could either share the
 code with insert() or write a dedicated method (which would
 essentially be a small subset of insert() and should be quite simple).

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Ticket URL: <http://bind10.isc.org/ticket/2847>
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BIND 10 Development