Missing support for time.strftime()

Created originally on Bitbucket by Anonymous

The most used way to get the date in openerp is with time.strftime("%Y-%m-%d")

This is currently not supported:

>>> import anybox.testing.datetime
>>> import time
>>> from datetime import datetime
>>> datetime.set_now(datetime(2222, 1, 1))
>>> datetime.now()
datetime(2222, 1, 1, 0, 0)
>>> time.strftime("%Y-%m-%d")
'2014-05-03'
>>>