test: keyid specified does not match ppa

Bug Description

The keyid specified for the modules/apt_configure_sources_keyserver integration test does not match the repo that is imported:

#cloud-config
apt:
source1:
keyid: 0165013E
keyserver: keyserver.ubuntu.com
source: "deb http://ppa.launchpad.net/cloud-init-dev/test-archive/ubuntu $RELEASE main"

That keyid is for the curtin developers test-archive ppa and not the cloud-init developer's test-archive ppa.

Expected result:
`apt-key list` should specify an entry for:
Launchpad PPA for cloud init development team
1FF0 D853 5EF7 E719 E5C8 1B9C 083D 06FB E4D3 04DF

Actual result:
A curtin developers entry.

This bug is believed to be fixed in cloud-init in 17.1. If this is still a problem for you, please make a comment and set the state back to New

Thank you.

Tracked in Github Issues as https://github.com/canonical/cloud-init/issues/2946