[Merge] ~lamoura/update-notifier:show-only-esm-infra-alerts-on-esm-machine into update-notifier:master

[Chad Smith]

Lucas , thanks for this. A note about a change Lech requested today on https://github.com/canonical/ubuntu-advantage-client/issues/1584 would ask that we also adapt the following text:


Learn more about enabling UA Infra: ESM service at https://ubuntu.com/esm

TO 

Learn more about enabling UA Infra: ESM service for Ubuntu 16.04 at https://ubuntu.com/16-04

on active ESM releases for Infra service.

Note that when Bionic or Fcal goes into ESM  we'll need something like:

Learn more about enabling UA Infra: ESM service for Ubuntu 18.04 at https://ubuntu.com/18-04

-- 
https://code.launchpad.net/~lamoura/update-notifier/+git/update-notifier/+merge/402163
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~lamoura/update-notifier:show-only-esm-infra-alerts-on-esm-machine into update-notifier:master.