Code review comment for ~ahasenack/ubuntu/+source/update-notifier:trusty-update-notifier-esm-aware

While testing the esm for apps bit with a hack, to fake lsb-release into thinking it's a xenial system, I found out that the current patck is mixing esm-infra and esm-apps security updates into just esm-infra:
"""
3 of these updates are provided through UA Infrastructure ESM.
"""
The statement above is mixing both repositories, but stating that it's only counting infra.

I'll suggest to just remove "Infrastructure" from that phrasing.