BIND 10 #1654: reduce xfrout logging

[BIND 10 Development]

#1654: reduce xfrout logging
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            Reporter:  jreed    |                        Owner:
                Type:  defect   |                       Status:  new
            Priority:  trivial  |                    Milestone:  New Tasks
           Component:  xfrout   |                     Keywords:
           Sensitive:  0        |              Defect Severity:  N/A
         Sub-Project:  DNS      |  Feature Depending on Ticket:
Estimated Difficulty:  0        |          Add Hours to Ticket:  0
         Total Hours:  0        |                    Internal?:  0
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 Reduce xfrout logging.

 For example both of these are INFO:

 {{{
 2012-01-17 16:05:53.911 INFO  [b10-xfrout.xfrout] XFROUT_NEW_CONFIG Update
 xfrout configuration
 2012-01-17 16:05:53.911 INFO  [b10-xfrout.xfrout] XFROUT_NEW_CONFIG_DONE
 Update xfrout configuration done
 }}}

 Maybe one or both can be DEBUG.

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Ticket URL: <http://bind10.isc.org/ticket/1654>
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