Added test for create partition table

Please review it
Thanks
@elyezer  : Actually,I tried using 
 f = NamedTemporaryFile(delete=False)
 f.write("hello world")
 f.name

But, what happens is the temp file is created on the system from which the nosetest is
executed and not the sat6 server on which test to be executed
hence I used the normal way for file operation
Please,let me know what can be done meanwhile
Thanks