Comment 42 for bug 1751923

Verified rocky-proposed using [Test Plan] with output as follows:

# apt-cache policy nova-common
nova-common:
  Installed: 2:18.3.0-0ubuntu1~cloud3
  Candidate: 2:18.3.0-0ubuntu1~cloud3
  Version table:
 *** 2:18.3.0-0ubuntu1~cloud3 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-proposed/rocky/main amd64 Packages
        100 /var/lib/dpkg/status
     2:17.0.13-0ubuntu3 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     2:17.0.10-0ubuntu2.1 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     2:17.0.1-0ubuntu1 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

I also tested by manually deleting the network_info for a vm then waiting for the periodic task to run - https://pastebin.ubuntu.com/p/7gmZQsvC8H/