[metrics-bugs] #24041 [Metrics]: Add Apache Commons Configuration as configuration library

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#24041: Add Apache Commons Configuration as configuration library
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     Reporter:  karsten      |      Owner:  metrics-team
         Type:  enhancement  |     Status:  new
     Priority:  Medium       |  Milestone:
    Component:  Metrics      |    Version:
     Severity:  Normal       |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |   Reviewer:
      Sponsor:               |
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 Looks like metrics-bot recently switched to using Apache Commons
 Configuration as configuration library (#23933). We should consider doing
 the same for other metrics parts, maybe after waiting a bit and hearing
 how that works out.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24041>
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