* Replace dict(obj.iteritems()) with dict(obj) where obj is a dictionary
or an oslo.db object
* Replace obj.iteritems() with obj.items() where obj is a dictionary:
obj.items() works on Python 2 and Python 3.
* Replace filter() and map() with list-comprehension using if when a list is
expected. On Python 3, filter() and map() return an iterator.
* Replace obj.keys() with list(obj.keys()) when a list is expected.
Replace obj.keys()[0] with list(obj.keys())[0]. On Python 3,
dict.keys() now returns an iterator.
* Replace (int, long) with six.integer_types
* Get the name of a function using the __name__ attribute, instead of
the func_name attribute. The func_name attribute was removed
in Python 3.
* InstanceTypeTestCase: use dict.update() to combine dictionaries
instead of using dict.items()+reduce()+dict()
* matchers.py: replace StringIO.StringIO with six.StringIO.
* tox.ini: add nova.tests.unit.db.test_db_api to Python 3.4
Blueprint nova-python3
Change-Id: Iae4f6d971818d5b38e838a83753a0707e954bb04
db282866bf