[Bug 1806079] [NEW] revert use of stestr in stable/pike

[Corey Bryant]

Public bug reported:

The following commit changed dependencies of nova in the stable/pike
branch and switched it to use stestr. There aren't any other projects
(as far as I can tell) that use stestr in pike. This causes issues, for
example, the Ubuntu cloud archive for pike doesn't have stestr. If
possible I think this should be reverted.


commit 5939ae995fdeb2746346ebd81ce223e4fe891c85
Date:   Thu Jul 5 16:09:17 2018 -0400

    Backport tox.ini to switch to stestr
    
    The pike branch was still using ostestr (instead of stestr) which makes
    running tests significantly different from queens or master. To make
    things behave the same way this commit backports most of the tox.ini
    from queens so that pike will behave the same way for running tests.
    This does not use the standard backport mechanism because it involves a
    lot of different commits over time. It's also not a functional change
    for nova itself, so the proper procedure is less important here.
    
    Change-Id: Ie207afaf8defabc1d1eb9332f43a9753a00f784d

** Affects: cloud-archive
     Importance: High
         Status: Triaged

** Affects: nova
     Importance: Undecided
         Status: New

** Also affects: cloud-archive
   Importance: Undecided
       Status: New

** Changed in: cloud-archive
       Status: New => Triaged

** Changed in: cloud-archive
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1806079

Title:
  revert use of stestr in stable/pike

Status in Ubuntu Cloud Archive:
  Triaged
Status in OpenStack Compute (nova):
  New

Bug description:
  The following commit changed dependencies of nova in the stable/pike
  branch and switched it to use stestr. There aren't any other projects
  (as far as I can tell) that use stestr in pike. This causes issues,
  for example, the Ubuntu cloud archive for pike doesn't have stestr. If
  possible I think this should be reverted.

  
  commit 5939ae995fdeb2746346ebd81ce223e4fe891c85
  Date:   Thu Jul 5 16:09:17 2018 -0400

      Backport tox.ini to switch to stestr
      
      The pike branch was still using ostestr (instead of stestr) which makes
      running tests significantly different from queens or master. To make
      things behave the same way this commit backports most of the tox.ini
      from queens so that pike will behave the same way for running tests.
      This does not use the standard backport mechanism because it involves a
      lot of different commits over time. It's also not a functional change
      for nova itself, so the proper procedure is less important here.
      
      Change-Id: Ie207afaf8defabc1d1eb9332f43a9753a00f784d

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