1. 1. Issue

Lack of documentation information explaining how to configure the propagationMethod -> configDrive

When we would like to pass a ssh public key mounted as kubernetes secret, the documentation explains that the VirtualMachine must include the following config

accessCredentials:
  - sshPublicKey:
      source:
        secret:
          secretName: my-pub-key
      propagationMethod:
        configDrive: {}

BUT if we configure the "configDrive: {}" as documented, then the process fails 

Error from server: error when creating "vm-ocp.yml": admission webhook "mutatevirtualmachines.kubemacpool.io" denied the request: json: cannot unmarshal array into Go struct field SSHPublicKeyAccessCredentialPropagationMethod.spec.template.spec.accessCredentials.sshPublicKey.propagationMethod.configDrive of type v1.ConfigDriveSSHPublicKeyAccessCredentialPropagation

So the documentation should be improved to explain :

• How to create a kubernetes secret containing the user's public key
• How to properly configure the "accessCredentials" section
• If the "volumes/cloudInitNoCloud' should be modified
  etc