BIND 10 #775: b10-auth should not exit if it cannot bind to ports

[BIND 10 Development]

#775: b10-auth should not exit if it cannot bind to ports
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           Reporter:  shane          |                      Owner:
               Type:  defect         |                     Status:  new
           Priority:  major          |                  Milestone:  Year 3
          Component:  b10-auth       |  Task Backlog
          Sensitive:  0              |                   Keywords:
Add Hours to Ticket:  0              |  Estimated Number of Hours:  0
        Total Hours:  0              |                  Billable?:  1
                                     |                  Internal?:  0
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 The b10-auth process should not exit if it cannot bind to ports, but
 should report the error condition.

 More background:

 I have a server with a running DNS server listening to 0.0.0.0:53, so
 b10-auth cannot start with the default configuration. The cfgmgr cannot
 update its settings because b10-auth is not responding (since it cannot
 start).

 See ticket #701 for a ticket explaining the behavior (which might be
 related).

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Ticket URL: <https://bind10.isc.org/ticket/775>
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BIND 10 Development