Comment 18 for bug 1693361

This is not fixed, it just affected me on Ubuntu 20.04.3 LTS, resulting in the the subsequent server configuration failing completely because awscli and jq were missing.

Output:

Cloud-init v. 21.3-1-g6803368d-0ubuntu1~20.04.4 running 'modules:config' at Fri, 12 Nov 2021 11:05:29 +0000. Up 18.13 seconds.
Get:1 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu focal InRelease [265 kB]
[... more Gets]
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 2764 (unattended-upgr)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
Cloud-init v. 21.3-1-g6803368d-0ubuntu1~20.04.4 running 'modules:final' at Fri, 12 Nov 2021 11:05:30 +0000. Up 19.15 seconds.
2021-11-12 11:05:38,955 - util.py[WARNING]: Package upgrade failed
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 2764 (unattended-upgr)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
2021-11-12 11:05:38,999 - util.py[WARNING]: Failed to install packages: ['awscli', 'nmap', 'tcpdump', 'bind9utils', 'curl', 'wget', 'vim', 'jq', 'htop', 'tmux', 'git', 'iotop', 'iftop', 'fail2ban']
2021-11-12 11:05:38,999 - cc_package_update_upgrade_install.py[WARNING]: 2 failed with exceptions, re-raising the last one
2021-11-12 11:05:39,000 - util.py[WARNING]: Running module package-update-upgrade-install (<module 'cloudinit.config.cc_package_update_upgrade_install' from '/usr/lib/python3/dist-packages/cloudinit/config/cc_package_update_upgrade_install.py'>) failed

Note: Before=apt-daily.service is only set on cloud-final.service.