Invalid cloud-config provided warning but still works -- how to remove?

This bug was originally filed in Launchpad as [LP: #1977818](https://bugs.launchpad.net/cloud-init/+bug/1977818)

Launchpad details

affected_projects = []

assignee = None

assignee_name = None

date_closed = None

date_created = 2022-06-07T09:09:43.404736+00:00

date_fix_committed = None

date_fix_released = None

id = 1977818

importance = medium

is_complete = False

lp_url = https://bugs.launchpad.net/cloud-init/+bug/1977818

milestone = None

owner = kimsia

owner_name = kimsia sim

private = False

status = triaged

submitter = kimsia

submitter_name = kimsia sim

tags = []

duplicates = []

_Launchpad user **kimsia sim(kimsia)** wrote on 2022-06-07T09:09:43.404736+00:00_

I get an invalid cloud-config warning despite everything working as expected.

This is the question i asked in superuser https://superuser.com/questions/1725127/invalid-config-for-cloud-init-but-apparently-still-works-how-do-i-remove-the

the cloud provider is DigitalOcean

this is not the full config

#cloud-config
package_update: true
package_upgrade: true
users:
- name: sammy
ssh-authorized-keys:
- ssh-rsa abcd...
- ssh-rsa efgh...
sudo: ['ALL=(ALL) NOPASSWD:ALL']
groups: sudo
shell: /bin/bash

See attached for the logs

Start with the provided cloud-config and the attached logs, then compare the warning with the DigitalOcean behavior described in the issue and the linked Launchpad report. Done means determining why this configuration is reported as invalid and ensuring the warning is removed or corrected without changing the working behavior.

Written by the indexing model from the issue text.