Fix double silent argument value

Fix for "TypeError: pull() got multiple values for keyword argument 'silent'."
This change https://github.com/docker/compose/commit/e9b6cc23fcf01d4768c7e082b7bc91b43ff84e7e caused additional value to be passed for the 'silent' argument, that was already passed there: https://github.com/docker/compose/commit/f85da99ef3273794e855afda8678174419d3bf4f

Signed-off-by: Nikita Vlaznev <[email protected]>

compose/project.py

@@ -493,7 +493,7 @@ class Project(object):
 
         if parallel_pull:
             def pull_service(service):
-                service.pull(ignore_pull_failures, True, silent=silent)
+                service.pull(ignore_pull_failures, silent=silent)
 
             parallel.parallel_execute(
                 services,