BIND 10 #1377: support omit_final_dot arg for python Name.to_text()

[BIND 10 Development]

#1377: support omit_final_dot arg for python Name.to_text()
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            Reporter:  jinmei        |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  major         |                       Status:  new
           Component:  libdns++      |                    Milestone:  Next-
           Sensitive:  0             |  Sprint-Proposed
         Sub-Project:  DNS           |                     Keywords:
Estimated Difficulty:  0             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 (and use it for python logging).

 Maybe it's only me, but final dots in something like "example.com./IN"
 look a bit awkward to me.  I'd like to make it "example.com/IN",
 and to do so we need this extension to Name.to_text().

 Even if the logging argument is not compelling, we should eventually
 support it in the sense that it's better if the python API is
 compatible to the C++ counterpart whenever it makes sense.

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Ticket URL: <https://bind10.isc.org/ticket/1377>
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