route_server: network interfaces file now contains non-conflicting settings with other interfaces

Author: Hafpaf

ansible/roles/route_server/files/interfaces

@@ -0,0 +1,6 @@
+# Interface enp1s0 called here
+source /etc/network/interfaces.d/*
+
+# The loopback network interface
+auto lo
+iface lo inet loopback

ansible/roles/route_server/tasks/interfaces.yml

@@ -7,3 +7,11 @@
     group: root
     mode: '0644'
   notify: restart networking
+- name: Copy interfaces file
+  copy:
+    dest: '/etc/network/interfaces'
+    src: interfaces
+    owner: root
+    group: root
+    mode: '0644'
+  notify: restart networking