Restructure into one folder per private repo/host, not a flat Docker/ dump

rocky-docker-lxc/, caddy-vm/, monitoring-vm/ (was missing entirely -
Grafana+Loki+Prometheus stack, refreshed and CA mount stripped same as
everything else), and automation/{ansible,automation-vm,iac}/ for the
three repos that live on the automation VM. Hawser is genuinely
deployed on all three of caddy-vm/monitoring-vm/automation-vm so it's
duplicated in each rather than picking one canonical home.

Old Ansible/ and "Infrastrucutre as Code/" content moved under
automation/ansible/old-playbooks and automation/iac/old-content as-is
for now - contents still need refreshing against the current repos and
a per-folder README, that's the next pass.

automation/iac/old-content/Ansible/roles/cis_hardening/defaults/main.yml

@@ -0,0 +1,6 @@
+---
+# Parent-level defaults
+cis_tag: cis_hardening
+audit_rules_file: /etc/audit/rules.d/cis.rules
+rsyslog_remote: "" # set to "logserver.example.com:514" to forward logs
+txt_grub_args: "" # additional kernel args if needed, e.g. "audit=1"