[Bug 1687129] Update Released

[Brian Murray]

The verification of the Stable Release Update for unattended-upgrades
has completed successfully and the package has now been 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/1687129

Title:
  Needs to allow updates from the ESM archive

Status in unattended-upgrades package in Ubuntu:
  Confirmed
Status in unattended-upgrades source package in Precise:
  Fix Released

Bug description:
  [SRU Justification]
  When the dust has settled on the ESM archive Release file format[1], unattended-upgrades needs to be tweaked to match.

  [1] https://github.com/CanonicalLtd/archive-auth-mirror/issues/43

  Since the ESM archive contains packages updated by the Ubuntu Security
  team, we should ensure the behavior of unattended-upgrades applies the
  same default policy to both.

  [Test case]
  1. run 'sudo apt-get install ubuntu-advantage-tools unattended-upgrades'
  2. run 'sudo ubuntu-advantage enable-esm <creds>' with your private creds to enable the ESM archive
  3. run 'sudo apt-get update'
  4. create a faked-up entry in /var/lib/apt/lists/esm.ubuntu.com_ubuntu_dists_precise_main_binary-amd64_Packages for the unattended-upgrades package with a higher version number
  5. run 'sudo unattended-upgrades --debug --dry-run' and verify that no unattended-upgrades package is installed.
  6. install unattended-upgrades from -proposed.
  7. again create a faked-up entry in /var/lib/apt/lists/esm.ubuntu.com_ubuntu_dists_precise_main_binary-amd64_Packages for the unattended-upgrades package with a higher version number
  8. run 'sudo unattended-upgrades --debug --dry-run' and verify that it offers to install a new unattended-upgrades package.

  [Regression potential]
  Worst-case scenario is a bug that prevents future security updates from being applied correctly.  This is not a concern for precise because there will be no further security updates /except/ those enabled by this SRU, but this SRU should also be included in all later stable releases.

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