feat: manage proxmox nodes

- change /etc/hosts to meet proxmox requirements
- add proxmox node role
- add init, params, repo, install, clusterjoin classes

modules/libs/lib/facter/pve_ceph_initialised.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require 'facter'
+
+Facter.add('pve_ceph_initialised') do
+  confine enc_role: 'roles::infra::proxmox::node'
+  setcode do
+    File.exist?('/etc/pve/ceph.conf')
+  end
+end