Use print('value') instead of print 'value' in python3

[sandeep nandal]

Do not use print 'some string' in python3, python3 will complain.
Use print('some string') instead, because that will work on both python2 n python3.
It will help in adding support for python3.

Example:-
File : nova/tools/xenserver/stress_test.py
Line : 166
            print "%s, finished in %.2f secs" % (result, duration)

[sandeep nandal (nandal)]

Hi Zhihai Song,

could you share the reason for the bug Won't Fix?

[Zhihai Song (szhsong)]

As far as i know. The python version is low on xenserver. That's why the xenserver tools still use the old format.