BIND 10 #945: zonemgr crashes on some configs

[BIND 10 Development]

#945: zonemgr crashes on some configs
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            Reporter:  jelte         |                        Owner:
                Type:  defect        |                       Status:  new
            Priority:  blocker       |                    Milestone:  New
           Component:  Unclassified  |  Tasks
           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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 also, when updating values, other previously configured values can be set
 to None instead of kept, and when something goes wrong, some new values
 are kept while others are not.

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Ticket URL: <http://bind10.isc.org/ticket/945>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development