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/is_pveceph_mgr.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require 'facter'
+
+Facter.add('is_pveceph_mgr') do
+  confine enc_role: 'roles::infra::proxmox::node'
+  setcode do
+    system('pgrep -x ceph-mgr > /dev/null 2>&1')
+  end
+end