[tor-bugs] #31023 [Core Tor/Tor]: Add tests for tor-print-ed-signing-cert and other tools, and run them in CI

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#31023: Add tests for tor-print-ed-signing-cert and other tools, and run them in CI
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     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.5.1-alpha
     Severity:  Normal        |   Keywords:  technical-debt
Actual Points:                |  Parent ID:  #31012
       Points:  1             |   Reviewer:
      Sponsor:                |
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 We almost missed a memory safety bug in #31012, because our CI doesn't run
 our tools. We should write some quick tool tests, and run them in our CI.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31023>
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