BIND 10 #2439: update xfrin so it performs post transfer checks

[BIND 10 Development]

#2439: update xfrin so it performs post transfer checks
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |                       Status:  new
            Priority:  medium        |                    Milestone:
           Component:  xfrin         |  Sprint-20130122
            Keywords:                |                   Resolution:
           Sensitive:  0             |                 CVSS Scoring:
         Sub-Project:  DNS           |              Defect Severity:  N/A
Estimated Difficulty:  3             |  Feature Depending on Ticket:
         Total Hours:  0             |  loadzone-ng
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Description changed by jinmei:

Old description:

> Subtask of #2368, and part of post-load checker. Depend on #2437 and
> #2438.
>
> See wiki:
> http://bind10.isc.org/wiki/ZoneLoadingAPIDesign#a2.4ValidationafterXfrinPython

New description:

 Subtask of #2368, and part of post-load checker. Depend on #2437 and
 #2438.

 See wiki:
 http://bind10.isc.org/wiki/ZoneLoadingAPIDesign#a2.4ValidationafterXfrinPython

 Note: in the sample code in the wiki page the comments state
 we accept the incoming zone regardless of the check, but our
 current set of checks are primitive and even xrin'ed zones should
 be rejected if the checks fail.  At least that's how BIND 9 works.

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Ticket URL: <http://bind10.isc.org/ticket/2439#comment:3>
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