[Bug 1821103] Proposed package upload rejected

[Łukasz Zemczak]

An upload of unattended-upgrades to cosmic-proposed has been rejected
from the upload queue for the following reason: "Some bugs are missing
valuable SRU information and changelog links to an unrelated, old bug
#182480. Please fix an re-upload.".

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https://bugs.launchpad.net/bugs/1821103

Title:
  [SRU] Skip sending email when no package had to be installed, upgraded
  or removed

Status in unattended-upgrades package in Ubuntu:
  Fix Released
Status in unattended-upgrades package in Debian:
  Fix Released

Bug description:
  [Impact]

   * Users get unattended-upgrade's email report every day or every time u-u ran, even when no package needed to be upraded, installed or removed. This can annoy administrators managing many servers.
   * The fix is sending the report email only when there were actions taken by u-u.

  [Test Case]

   * The extended autopkgtest script checks if no email is sent when u-u
  did not upgrade packages.

  [Regression Potential]

   * Unattended-upgrades may skip sending emails which would contain
  useful information, but given the size and the simplicity of the
  scripts this seems unlikely.

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