Refactor network role

roles/network/templates/netplan.yaml.j2

@@ -0,0 +1,38 @@
+---
+network:
+  version: "{{ network_netplan_version | default(2) }}"
+  renderer: "{{ network_netplan_renderer | default("networkd") }}"
+{% if network_interfaces is defined and network_interfaces | length %}
+  ethernets:
+{%   for iface in network_interfaces %}
+    {{ iface['name'] }}:
+{%     if iface['inet4']['dhcp'] is defined %}
+      dhcp4: "{{ iface['inet4']['dhcp'] | ternary('yes', 'no') }}"
+{%     endif %}
+{%     if iface['inet4']['dhcp'] is defined %}
+      dhcp6: "{{ iface['inet6']['dhcp'] | ternary('yes', 'no') }}"
+{%     endif %}
+{%     if iface['inet4']['address'] is defined or iface['inet6']['address'] is defined %}
+      addresses:
+{%       for ip in iface['inet4']['address'] | default([]) %}
+        - {{ ip }}
+{%       endfor %}
+{%       for ip in iface['inet6']['address'] | default([]) %}
+        - {{ ip }}
+{%       endfor %}
+{%     endif %}
+{%     if iface['inet4']['gateway'] is defined %}
+      gateway4: "{{ iface['inet4']['gateway'] }}"
+{%     endif %}
+{%     if iface['inet6']['gateway'] is defined %}
+      gateway6: "{{ iface['inet6']['gateway'] }}"
+{%     endif %}
+{%     if network_dns_nameservers is defined %}
+      nameservers:
+        addresses:
+{%       for ip in network_dns_nameservers %}
+          - {{ ip }}
+{%       endfor %}
+{%     endif %}
+{%   endfor %}
+{% endif %}