[Bug 2029089] Update Released

[Steve Langasek]

The verification of the Stable Release Update for distro-info has
completed successfully and the package is now being released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/2029089

Title:
  [SRU] Please backport UbuntuDistroInfo().get_all(result="object") to
  Xenial

Status in distro-info package in Ubuntu:
  Triaged
Status in distro-info source package in Xenial:
  Fix Released

Bug description:
  I'm working on a update to software-properties in 16.04 to support the
  Ubuntu Pro tab. That work was already released to >=18.04, containing,
  for example, in commit "Show extended security maintenance status"[1]:

  ```python
  def current_distro():
      distro = aptsources.distro.get_distro()
      di = distro_info.UbuntuDistroInfo()
      releases = di.get_all(result="object")
      [...]
  ```

  That is functionality introduced in versions 0.15 and 0.16 of distro-
  info, for which Xenial didn't receive a backport yet.

  Test Plan
  ---------

  1. Install the update.
  2. Verify that running this in a shell prints a list of a correct list of EOL date (in YY-MM-DDDD format) and distribution name to the standard output:

  --->
  python3 <<EOF | sort -n
  import distro_info
  for d in distro_info.UbuntuDistroInfo().get_all(result="object"):
    print("%s %s" % (d.eol, d.codename))
  EOF
  <---

  Regression potential
  --------------------

  If something were wrong with this update, reverse dependencies could
  misidentify a given release, e.g. by incorrectly assessing a user
  release as supported or no longer supported, LTS or non-LTS etc..

  [1] https://git.launchpad.net/software-
  properties/commit/?h=ubuntu/bionic&id=c2bb1f8eeb70e2a9c4b40f326d21c287dec1baa8

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