Add __ne__ built-in function for astara

In Python 3 __ne__ by default delegates to __eq__ and inverts the
result,but in Python 2 they urge you to define __ne__ when you define
__eq__ for it to work properly.There are no implied relationships
among the comparison operators. The truth of x==y does not imply that
x!=y is false.Accordingly, when defining __eq__(), one should also
define __ne__() so that the operators will behave as expected.

Change-Id: I9859ad3bdf304ba87d04c9ecabf069b0fdfe4b45

astara/api/neutron.py

@@ -362,6 +362,9 @@ class Port(DictModelBase):
     def __eq__(self, other):
         return type(self) == type(other) and vars(self) == vars(other)
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     @property
     def first_v4(self):
         for fixed_ip in self.fixed_ips:
@@ -396,6 +399,9 @@ class FixedIp(DictModelBase):
     def __eq__(self, other):
         return type(self) == type(other) and vars(self) == vars(other)
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     @classmethod
     def from_dict(cls, d):
         return cls(d['subnet_id'], d['ip_address'])

astara/common/linux/ip_lib.py

@@ -160,6 +160,9 @@ class IPDevice(SubProcessBase):
         return (other is not None and self.name == other.name and
                 self.namespace == other.namespace)
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __str__(self):
         return self.name
 

astara/test/unit/test_debug.py

@@ -62,6 +62,9 @@ class TestDebug(base.RugTestBase):
             def __eq__(self, other):
                 return self.crud == other.crud
 
+            def __ne__(self, other):
+                return not self.__eq__(other)
+
         automaton.return_value.send_message.assert_called_once_with(
             CrudMatch('update')
         )