Improve code quality (again)

modoboa/core/password_hashers/base.py

@@ -23,7 +23,6 @@ from six import with_metaclass
 class MetaHasher(type):
     """
     PasswordHasher Metaclass
-    
     Allow classmethod to be properties
     """
     @property

modoboa/lib/sysutils.py

@@ -47,7 +47,7 @@ def exec_cmd(cmd, sudo_user=None, pinput=None, capture_output=True, **kwargs):
 
 
 def doveadm_cmd(params, sudo_user=None, pinput=None,
-        capture_output=True, **kwargs):
+                capture_output=True, **kwargs):
     """Execute doveadm command.
 
     Run doveadm command using the current user. Set :keyword:`sudo_user` if