Execute methods of Requests accept context

There were errors whenever a request that got handles in
other_message.py got it's execute method called, as it was being called
with a context parameter. The functions now accept this parameter,
although they don't do anything with it.

The tests have also been updated.

pymodbus/other_message.py

@@ -42,7 +42,7 @@ def decode(self, data):
         '''
         pass
 
-    def execute(self):
+    def execute(self, context):
         ''' Run a read exeception status request against the store
 
         :returns: The populated response
@@ -143,7 +143,7 @@ def decode(self, data):
         '''
         pass
 
-    def execute(self):
+    def execute(self, context):
         ''' Run a read exeception status request against the store
 
         :returns: The populated response
@@ -248,7 +248,7 @@ def decode(self, data):
         '''
         pass
 
-    def execute(self):
+    def execute(self, context):
         ''' Run a read exeception status request against the store
 
         :returns: The populated response
@@ -358,7 +358,7 @@ def decode(self, data):
         '''
         pass
 
-    def execute(self):
+    def execute(self, context):
         ''' Run a read exeception status request against the store
 
         :returns: The populated response

test/test_other_messages.py

@@ -37,7 +37,7 @@ def testReadExceptionStatus(self):
         request = ReadExceptionStatusRequest()
         request.decode('\x12')
         self.assertEqual(request.encode(), '')
-        self.assertEqual(request.execute().function_code, 0x07)
+        self.assertEqual(request.execute(None).function_code, 0x07)
 
         response = ReadExceptionStatusResponse(0x12)
         self.assertEqual(response.encode(), '\x12')
@@ -48,7 +48,7 @@ def testGetCommEventCounter(self):
         request = GetCommEventCounterRequest()
         request.decode('\x12')
         self.assertEqual(request.encode(), '')
-        self.assertEqual(request.execute().function_code, 0x0b)
+        self.assertEqual(request.execute(None).function_code, 0x0b)
 
         response = GetCommEventCounterResponse(0x12)
         self.assertEqual(response.encode(), '\x00\x00\x00\x12')
@@ -63,7 +63,7 @@ def testGetCommEventLog(self):
         request = GetCommEventLogRequest()
         request.decode('\x12')
         self.assertEqual(request.encode(), '')
-        self.assertEqual(request.execute().function_code, 0x0c)
+        self.assertEqual(request.execute(None).function_code, 0x0c)
 
         response = GetCommEventLogResponse()
         self.assertEqual(response.encode(), '\x06\x00\x00\x00\x00\x00\x00')
@@ -89,9 +89,9 @@ def testReportSlaveId(self):
         request = ReportSlaveIdRequest()
         request.decode('\x12')
         self.assertEqual(request.encode(), '')
-        self.assertEqual(request.execute().function_code, 0x11)
+        self.assertEqual(request.execute(None).function_code, 0x11)
 
-        response = ReportSlaveIdResponse(request.execute().identifier, True)
+        response = ReportSlaveIdResponse(request.execute(None).identifier, True)
         self.assertEqual(response.encode(), '\x0apymodbus\xff')
         response.decode('\x03\x12\x00')
         self.assertEqual(response.status, False)