[metrics-bugs] #33617 [Core Tor/Tor]: Add a BandwidthStatistics option and consensus parameter

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#33617: Add a BandwidthStatistics option and consensus parameter
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     Reporter:  teor           |      Owner:  (none)
         Type:  enhancement    |     Status:  new
     Priority:  Medium         |  Milestone:  Tor: 0.4.4.x-final
    Component:  Core Tor/Tor   |    Version:
     Severity:  Normal         |   Keywords:  prop313, ipv6
Actual Points:                 |  Parent ID:  #33052
       Points:  1              |   Reviewer:
      Sponsor:  Sponsor55-can  |
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 Stage 1:

 We propose adding a new BandwidthStatistics torrc option, which activates
 reporting of all the bandwidth statistics. At the moment, all  statistics
 are controlled by ExtraInfoStatistics, but we propose using the new
 BandwidthStatistics option specifically for the bandwidth statistics.

 The default value of this option should be 1. (The existing bandwidth
 statistics are reported by default.)

 The new option should have a manual page entry, and test_parseconf.sh
 tests in src/test/conf_examples.

 Stage 2:

 Add a BandwidthStatistics consensus paramter.

 Change the default value of the BandwidthStatistics option to "auto". If
 the value is "auto", use the value of the consensus parameter. If the
 consensus parameter is not set, use "1".

 Update the manual page to describe the new consensus parameter.

 See the proposal:
 https://gitweb.torproject.org/torspec.git/tree/proposals/313-relay-
 ipv6-stats.txt#n298

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33617>
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