[tor-bugs] #27068 [Core Tor/Chutney]: TOR_DIR shouldn't override CHUTNEY_TOR and CHUTNEY_TOR_GENCERT

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#27068: TOR_DIR shouldn't override CHUTNEY_TOR and CHUTNEY_TOR_GENCERT
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     Reporter:  catalyst          |      Owner:  (none)
         Type:  defect            |     Status:  new
     Priority:  Medium            |  Milestone:  Tor: 0.3.5.x-final
    Component:  Core Tor/Chutney  |    Version:
     Severity:  Normal            |   Keywords:
Actual Points:                    |  Parent ID:  #27067
       Points:                    |   Reviewer:
      Sponsor:                    |
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 Right now, chutney's warnings when it can't find tor or tor-gencert
 suggest to set `CHUTNEY_TOR` and `CHUTNEY_TOR_GENCERT`.  However, attempts
 to set these get overwritten by tools/test-network.sh with either a
 computed result based on `TOR_DIR` if that is set, or with plain program
 names to be searched in the path.  This makes it harder to work around
 #27067.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27068>
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