Merge "Wrong usage of "an""

neutron/agent/firewall.py

@@ -78,7 +78,7 @@ class FirewallDriver(object):
     def update_port_filter(self, port):
         """Refresh security group rules from data store
 
-        Gets called when an port gets added to or removed from
+        Gets called when a port gets added to or removed from
         the security group the port is a member of or if the
         group gains or looses a rule.
         """

neutron/agent/ovsdb/api.py

@@ -102,7 +102,7 @@ class API(object):
 
     @abc.abstractmethod
     def add_br(self, name, may_exist=True, datapath_type=None):
-        """Create an command to add an OVS bridge
+        """Create a command to add an OVS bridge
 
         :param name:            The name of the bridge
         :type name:             string