[wireguard] Use nftables on boeing

plays/wireguard.yml

@@ -8,7 +8,8 @@
       sputnik: true
       private_key: "{{ vault_wireguard_sputnik_private_key }}"
       peer_public_key: "{{ vault_wireguard_boeing_public_key }}"
-  roles: ["wireguard"]
+  roles:
+    - wireguard
 
 - hosts: boeing.adm.crans.org
   vars:
@@ -19,4 +20,5 @@
       if: ens20
       private_key: "{{ vault_wireguard_boeing_private_key }}"
       peer_public_key: "{{ vault_wireguard_sputnik_public_key }}"
-  roles: ["wireguard"]
+  roles:
+    - wireguard