YAML : How to avoid having the default ssh pub key carriage return populated in the user-data of CKS instances ?

[n4l5u0r]

I have an issue as when I deploy a kubernetes servers using no matter which iso the user-data are not ok as it creates a carriage return at the end of the default ssh_authorized_keys and then the whole user-data is wrong and nothing works as expected.
Impossible for Instances to load it from the VR as it's not well formed so not available at http://10.30.0.1/latest/user-data

when I add a user created ssh key during the creation I have the same issue as the default key is still present and fails everything.
If I reopen all intances manually and update the user-data and then restart everything including the VR it finally works but this is not scalable at all and not possible to automate.

Cloudstack : 4.20.2.0
Fresh install. No changes to the standard default public key / private key of Cloudstack.

---
users:
  - name: cloud
    sudo: ALL=(ALL) NOPASSWD:ALL
    shell: /bin/bash
    ssh_authorized_keys:
      - "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBGB14d02p9Am1IE1Jedqhde+3PF00cdzoz/JNMlHL87HSG0RQ4+/XnGm7qXPr+cOGFFY9uWgKmk/YNOsfEOMY6w= cloud@core-mgmt-1-dev
"
      - "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC+/bep3Bnt7NLoO+EwLvL1HfLZ6QtyZA/SRaFYYcX7L cloud@test-system"

write_files:
  - path: /etc/conf.d/nfs
    permissions: '0644'
    content: |
      OPTS_RPC_MOUNTD=""

  - path: /etc/kubernetes/pki/cloudstack/ca.crt
    permissions: '0644'
...

Thank you very much for you help.