fix netplan

files/netplan.yaml.j2

@@ -7,6 +7,7 @@ network:
       dhcp4: false
       dhcp6: false
 {% endfor %}
+{% if bonds | length > 0 %}
   bonds:
 {% for bond in bonds %}
     '{{bond.name}}':
@@ -25,6 +26,8 @@ network:
       dhcp4: false
       dhcp6: false
 {% endfor %}
+{% endif %}
+{% if vlans | length > 0 %}
   vlans:
 {% for vlan in vlans %}
     '{{vlan.link}}.{{vlan.tag}}':
@@ -33,3 +36,4 @@ network:
       dhcp4: false
       dhcp6: false
 {% endfor %}
+{% endif %}