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

roles/configuration/tasks/network_alpine.yml

@@ -0,0 +1,37 @@
+---
+- name: Write Alpine network interfaces
+  vars:
+    configuration_dns_list: "{{ system_cfg.network.dns.servers | default([]) }}"
+  ansible.builtin.copy:
+    dest: /mnt/etc/network/interfaces
+    mode: "0644"
+    content: |
+      auto lo
+      iface lo inet loopback
+      {% for iface in system_cfg.network.interfaces %}
+      {% set inv_name = iface.name | default('') | string %}
+      {% set det_name = configuration_detected_interfaces[loop.index0] | default('eth' ~ loop.index0) %}
+      {% set iface_name = inv_name if inv_name | length > 0 else det_name %}
+      {% set has_static = (iface.ip | default('') | string | length) > 0 %}
+
+      auto {{ iface_name }}
+      iface {{ iface_name }} inet {{ 'static' if has_static else 'dhcp' }}
+      {% if has_static %}
+        address {{ iface.ip }}/{{ iface.prefix }}
+      {% if iface.gateway | default('') | string | length %}
+        gateway {{ iface.gateway }}
+      {% endif %}
+      {% endif %}
+      {% endfor %}
+
+- name: Set Alpine DNS resolvers
+  vars:
+    configuration_dns_list: "{{ system_cfg.network.dns.servers | default([]) }}"
+  when: configuration_dns_list | length > 0
+  ansible.builtin.copy:
+    dest: /mnt/etc/resolv.conf
+    mode: "0644"
+    content: |
+      {% for resolver in configuration_dns_list %}
+      nameserver {{ resolver }}
+      {% endfor %}