fix drone

.drone.yml

@@ -8,7 +8,7 @@ steps:
       host: swarm-test.autonomic.zone
       stack: traefik
       networks:
-       - proxy
+        - proxy
       deploy_key:
         from_secret: drone_ssh_swarm_test
     environment:
@@ -16,7 +16,7 @@ steps:
       STACK_NAME: traefik
       LETS_ENCRYPT_ENV: production
       LETS_ENCRYPT_EMAIL: helo@autonomic.zone
-      TRAEFIK_YML_VERSION: v21
+      TRAEFIK_YML_VERSION: v22
       FILE_PROVIDER_YML_VERSION: v10
       ENTRYPOINT_VERSION: v4
 trigger: