Fix flake8, black and pylint errors in code

Change-Id: Ic03f4d31e2ba9801be20d3679bd5749948cab39d
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/osm_ee/util/util_ansible.py b/osm_ee/util/util_ansible.py
index 8f27875..37ed18b 100644
--- a/osm_ee/util/util_ansible.py
+++ b/osm_ee/util/util_ansible.py
@@ -29,12 +29,15 @@
 logger = logging.getLogger("osm_ee.util_ansible")
 
 
-async def execute_playbook(playbook_name: str, inventory: str, extra_vars: dict,
-                           ) -> (int, str):
+async def execute_playbook(
+    playbook_name: str,
+    inventory: str,
+    extra_vars: dict,
+) -> (int, str):
 
-    command = 'ansible-playbook --inventory={} --extra-vars {} {}'.format(quote(inventory),
-                                                                          quote(json.dumps(extra_vars)),
-                                                                          quote(playbook_name))
+    command = "ansible-playbook --inventory={} --extra-vars {} {}".format(
+        quote(inventory), quote(json.dumps(extra_vars)), quote(playbook_name)
+    )
 
     logger.debug("Command to be executed: {}".format(command))