BIND 10 #2863: handle "segment_info_update" message in b10-auth

[BIND 10 Development]

#2863: handle "segment_info_update" message in b10-auth
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                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  New Tasks
                   Priority:         |              Keywords:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  b10-auth                           |  Estimated Difficulty:  0
               CVSS Scoring:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
  shared memory data source          |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 Subtask of #2830.  Depend on #2862.

 In this task, we'll implement the b10-auth side of message exchanges
 with memmgr as described in
 http://bind10.isc.org/wiki/SharedMemoryIPC

 The work at b10-auth is quite simple: for each specified name of
 data source, call `ConfigurableClientList::resetMemorySegment`
 in the READ_ONLY mode.

 If this is during the initial setup, check if all segments are INUSE,
 and (if holding off until this point), start listening to queries.

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Ticket URL: <http://bind10.isc.org/ticket/2863>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development