Reformat N2VC to standardized format

Change-Id: I7bfc2236cd5f059dc1b659e9fb746fef619124b8
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/n2vc/juju_watcher.py b/n2vc/juju_watcher.py
index e206e06..9f9520f 100644
--- a/n2vc/juju_watcher.py
+++ b/n2vc/juju_watcher.py
@@ -72,10 +72,7 @@
 
 class JujuModelWatcher:
     @staticmethod
-    async def wait_for_model(
-        model: Model,
-        timeout: float = 3600
-    ):
+    async def wait_for_model(model: Model, timeout: float = 3600):
         """
         Wait for all entities in model to reach its final state.