BIND 10 #2136: update the stats daemon according to the new statistics model

[BIND 10 Development]

#2136: update the stats daemon according to the new statistics model
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                   Reporter:         |                 Owner:  UnAssigned
  naokikambe                         |                Status:  reviewing
                       Type:         |             Milestone:
  enhancement                        |  Sprint-20120731
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  statistics                         |  Estimated Difficulty:  8? (depends
                   Keywords:         |  on #2135)
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by naokikambe):

 * owner:  naokikambe => UnAssigned
 * status:  accepted => reviewing


Comment:

 The branch is ready for reviewing. The documentation task #2135 isn't
 reviewed yet but I implemented according to that document prior to
 completion. If changes of the document affect this implement, the codes
 should be changed.

 BTW, This is a proposed !ChangeLog entry. It includes changes in #2137 and
 #2138 since they depends on this ticket. So I'd like to add it after all
 of them are finished.
 {{{
 nnn.    [func]*         naokikambe, someone
         b10-stats polls bind10 and b10-auth for statistics data.  The
         "poll-interval" parameter in b10-stats is for configuring the
 polling
         interval. All statistics data collected once are preserved while
         b10-stats is running. The "sendstats" command was removed from
 bind10
         and b10-auth. The "statistics-interval" configuration item was
 removed
         from b10-auth.
         (Trac #2136, #2137 and #2138, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2136#comment:4>
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