[tor-bugs] #31309 [Core Tor/Tor]: Add envvar to pass options to practracker

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#31309: Add envvar to pass options to practracker
-------------------------------------------------+-------------------------
 Reporter:  nickm                                |          Owner:  nickm
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  practracker, tech-debt,              |  Actual Points:  0
  refactoring, easy, 041-deferred-20190530,      |
  network-team-roadmap-july                      |
Parent ID:  #29746                               |         Points:  .1
 Reviewer:  asn                                  |        Sponsor:
                                                 |  Sponsor31-can
-------------------------------------------------+-------------------------
Changes (by dgoulet):

 * reviewer:   => asn


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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31309#comment:2>
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