alpine: create network interface include directory

So that init script doesn’t complain.

roles/alpine/tasks/main.yml

@@ -19,6 +19,13 @@
     mode: 0644
   notify: restart networking
 
+- name: Create network interface directory
+  file:
+    path: /etc/network/interfaces.d
+    state: directory
+    mode: "0755"
+  notify: restart networking
+
 - name: Set up network interfaces
   template:
     dest: /etc/network/interfaces