refactor(configuration): split network.yml into per-init-system dispatch files

roles/configuration/tasks/network_nm.yml

@@ -0,0 +1,26 @@
+---
+- name: Copy NetworkManager keyfile per interface
+  vars:
+    configuration_iface: "{{ item }}"
+    configuration_iface_name: >-
+      {{
+        item.name
+        if (item.name | default('') | string | length) > 0
+        else (configuration_detected_interfaces[idx] | default('eth' ~ idx))
+      }}
+    configuration_net_uuid: "{{ ('LAN-' ~ idx ~ '-' ~ hostname) | ansible.builtin.to_uuid }}"
+  ansible.builtin.template:
+    src: network.j2
+    dest: "/mnt/etc/NetworkManager/system-connections/LAN-{{ idx }}.nmconnection"
+    mode: "0600"
+  loop: "{{ system_cfg.network.interfaces }}"
+  loop_control:
+    index_var: idx
+    label: "LAN-{{ idx }}"
+
+- name: Fix Ubuntu unmanaged devices
+  when: os in ["ubuntu", "ubuntu-lts"]
+  ansible.builtin.file:
+    path: /mnt/etc/NetworkManager/conf.d/10-globally-managed-devices.conf
+    state: touch
+    mode: "0644"