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/filesystem_hardening/defaults/main.yml

@@ -0,0 +1,4 @@
+tmp_mount_options: "defaults,nosuid,nodev,noexec,relatime"
+var_tmp_mount_options: "defaults,nosuid,nodev,noexec,relatime"
+home_mount_options: "defaults,nosuid,nodev,relatime"
+dev_shm_mount_options: "defaults,nosuid,nodev,noexec,relatime"

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

@@ -0,0 +1,34 @@
+---
+# Remount and persist secure options using defaults variables
+
+- name: Gather mount facts
+  ansible.builtin.setup:
+    filter: ansible_mounts
+
+- name: Ensure /tmp has secure mount options
+  ansible.builtin.mount:
+    path: /tmp
+    fstype: "{{ ansible_mounts | selectattr('mount','equalto','/tmp') | map(attribute='fstype') | first }}"
+    opts: "{{ tmp_mount_options }}"
+    state: mounted
+
+- name: Ensure /var/tmp has secure mount options
+  ansible.builtin.mount:
+    path: /var/tmp
+    fstype: "{{ ansible_mounts | selectattr('mount','equalto','/var/tmp') | map(attribute='fstype') | first }}"
+    opts: "{{ var_tmp_mount_options }}"
+    state: mounted
+
+- name: Ensure /home has secure mount options
+  ansible.builtin.mount:
+    path: /home
+    fstype: "{{ ansible_mounts | selectattr('mount','equalto','/home') | map(attribute='fstype') | first }}"
+    opts: "{{ home_mount_options }}"
+    state: mounted
+
+- name: Ensure /dev/shm has secure mount options
+  ansible.builtin.mount:
+    path: /dev/shm
+    fstype: tmpfs
+    opts: "{{ dev_shm_mount_options }}"
+    state: mounted