BIND 10 #1058: dhcp4/6 state should be configurable from config

[BIND 10 Development]

#1058: dhcp4/6 state should be configurable from config
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            Reporter:  tomek   |                        Owner:  UnAssigned
                Type:  defect  |                       Status:  new
            Priority:  minor   |                    Milestone:  New Tasks
           Component:  dhcp    |                     Keywords:
           Sensitive:  0       |              Defect Severity:  Low
         Sub-Project:  DHCP    |  Feature Depending on Ticket:
Estimated Difficulty:  0       |          Add Hours to Ticket:  0
         Total Hours:  0       |                    Internal?:  0
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 Currently dhcp4 and dhcp6 are disabled by default:

         self.cfg_start_dhcp6 = False
         self.cfg_start_dhcp4 = False

 State of both services should be configurable. In particular:
 - bin/bind10/bob.spec must be updated
 - new parameters must be parsed, similar to auth and resolver:

      self.cfg_start_auth = config_data.get("start_auth")
      self.cfg_start_resolver = config_data.get("start_resolver")

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Ticket URL: <http://bind10.isc.org/ticket/1058>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development