Ubuntu 2404 broken on Azure

[dharapvj]

I tried to spawn 2404 machines in Azure today and got hit by same cloud-init issue as before (just that our latest fix does not work with latest 2404 machines)

# cloud-init-output.log
2024-07-02 05:58:40,392 - util.py[WARNING]: No instance datasource found! Likely bad things to come!

I tried using default offline-osp (v1.5.0) that gets shipped with kubeone 1.8.0 as well as custom OSP. Issue remained same. I also tried to comment out following block because that's where we get datasource error log, but it did not improve the situation.

            {{- /* Azure's cloud-init provider integration has changed recently (end of April 2024) and now requires us to run this command below once to set some files up that seem required for another cloud-init run. */}}
            {{- if (eq .CloudProviderName "azure") }}
            cloud-init init --local
            {{- end }}

Steps to reproduce:

1. Create MD with below imageReference in Azure kubeone cluster

            imageReference:
              publisher: Canonical
              offer: ubuntu-24_04-lts
              sku: server
              version: 24.04.202406170

1. Check cloud-init-output.log
2. Also observe that machine never joins the cluster.

[ahmedwaleedmalik]

Ubuntu 24.04 is not supported yet. Will keep this issue in mind when we work on adding support for it.