Comment 6 for bug 1690270

I did this verification while checking https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/1686183/comments/33. I'll reproduce it below.

To properly test this I configured apt to not install recommends by default, otherwise just by installing apt-transport-https we would already get ca-certificates. This was the local config change:

$ cat /etc/apt/apt.conf.d/no-recommends
APT::Install-Recommends "false";

Here are the results:

a) zesty:
Package from proposed:
*** 2 500
        500 http://br.archive.ubuntu.com/ubuntu zesty-proposed/main amd64 Packages

ubuntu@zesty-ubuntu-advantage:~$ sudo ubuntu-advantage enable-esm <redacted>
Installing missing dependency apt-transport-https
Installing missing dependency ca-certificates
Running apt-get update...
(...)

b) xenial:
Package from proposed:
*** 2 500
        500 http://br.archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages

ubuntu@xenial-ubuntu-advantage:~$ sudo ubuntu-advantage enable-esm <redacted>
Installing missing dependency apt-transport-https
Installing missing dependency ca-certificates
Running apt-get update...
(...)

c) trusty:
Package from proposed:
 *** 2 0
        500 http://archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64 Packages

ubuntu@trusty-ubuntu-advantage-1686183:~$ sudo ubuntu-advantage enable-esm <redacted>
Installing missing dependency apt-transport-https
Installing missing dependency ca-certificates
Running apt-get update...
(...)