BIND 10 #1555: refactor: DHCP listening on more than one interface, timeout

[BIND 10 Development]

#1555: refactor: DHCP listening on more than one interface, timeout
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            Reporter:  tomek         |                        Owner:
                Type:  enhancement   |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  dhcp          |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-DHCP-20130717
         Sub-Project:  DHCP          |                   Resolution:
Estimated Difficulty:  0             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by marcin):

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


Comment:

 I have updated the code as follows:
 - renamed !''interface!'' to !''interfaces!'' parameter which holds the
 list of interfaces
 - Interface names or asterisk can be specified on the list. The asterisk
 means !''all interfaces!''. it can be used concurrently with explicit
 interface names.
 - When configuration is committed, all sockets are reopened according to
 the new configuration.
 - Interface Manager holds additional flag for each interface which marks
 if it is active or inactive. Inactive interfaces are not used to listen to
 DHCP traffic.
 - Bind10 updated with the examples of interface selection.

 '''Important note: One of the commits cleans whitespaces in multiple
 files. I recommend to use:
 {{{
 git diff -w dd01c785f0d8eb616ee4179299dc53e0d2c0015c
 }}}

 to generate the diff. The -w flag will exclude whitespace changes from the
 diff.

 Please review.

-- 
Ticket URL: <http://bind10.isc.org/ticket/1555#comment:4>
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