[Feature] Should accommodate volatile plugin data

[smougenot]

First, thank you for this code. It worked great for me.

Limitation encountered

It looks like this role does not handle plugin data change (secret refresh).

Feature

This feature aims to manage volatile secrets in the plugin data.
Because often the credential data are ephemeral.

Use case to reproduce

(First use of the role works fine)

• setup pve_acme_plugin_data content
  • for my dns provider api (OVH) generated secrets may be valid only one hour.
• run the playbook
  • worked fine
• wait for expiration
• try refresh
  • the api cal fails (indeed because of expired secrets)
• renew secrets from dns provider
• update pve_acme_plugin_data content
• try refresh
  • the api cal fails again
  • the acme plugin was not update with the new cerdential

possible workaround

A quick work around could be to change the value of pve_acme_plugin_name.
I did not tried.