BIND 10 #2918: support config generation ID

[BIND 10 Development]

#2918: support config generation ID
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |                       Status:  new
            Priority:  medium        |                    Milestone:  New
           Component:                |  Tasks
  configuration                      |                   Resolution:
            Keywords:                |                 CVSS Scoring:
           Sensitive:  0             |              Defect Severity:  N/A
         Sub-Project:  DNS           |  Feature Depending on Ticket:
Estimated Difficulty:  0             |  shared memory data source
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by jinmei):

 Replying to [comment:1 vorner]:
 > I don't oppose migrating from one version of configuration to other, but
 I must say I don't like this approach.
 >
 > The generation ID is some kind of metadata. I don't want to show such
 things to users or allow them tweaking that. We could create some kind of
 „invisible“ configuration items, but it still looks little bit broken to
 me.

 I wouldn't necessarily insist this is the best approach, but if you
 don't like it please provide an alternative solution.  I believe the
 issue is real and we need to solve it within the set of this feature
 tasks somehow.

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Ticket URL: <http://bind10.isc.org/ticket/2918#comment:2>
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