[tor-bugs] #27102 [Core Tor/Tor]: decouple bootstrap progress numbers from BOOTSTRAP_STATUS enum values

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#27102: decouple bootstrap progress numbers from BOOTSTRAP_STATUS enum values
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     Reporter:           |      Owner:  catalyst
  catalyst               |
         Type:  defect   |     Status:  assigned
     Priority:  Medium   |  Milestone:  Tor: 0.3.5.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  usability, ux, ux-team, bootstrap,
     Severity:  Normal   |  035-roadmap-subtask, 035-triaged-in-20180711
Actual Points:           |  Parent ID:  #22266
       Points:           |   Reviewer:
      Sponsor:           |
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 If we start reporting intermediate bootstrap phases, for example when
 reporting PT status when connecting to the Tor network through a PT bridge
 (#25502), there aren't many numbers remaining to insert between some
 existing phases (if we stick to integers).

 We should decouple these so we don't have to cram everything into a tiny
 portion of the progress bar.  It also doesn't make sense to report
 progress phases that we will never need to execute.

 Alternatively, renumber the enums to give us more space toward the
 beginning of the progress bar.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27102>
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