Replace dict.iteritems() with six.iteritems(dict)

This patch was generated by the sixer tool version 0.2 using the
"iteritems" operation:
https://pypi.python.org/pypi/sixer

Manual changes:

- Don't change get_instance_metadata() in nova/compute/api.py:
  fixed by the change Ifd455e70002eb9636b87f83788384127ba6edeeb.
- Don't change sqlalchemy code and
  nova/tests/unit/db/test_db_api.py. sqlalchemy objects cannot be
  converted to a dictionary using dict(obj) directly yet. It will be
  possible with the change I702be362a58155a28482e733e60539d36c039509.
- Revert change in a comment in nova/objects/instance.py; the sixer tool
  is limited and don't understand comments
- Reformat nova/virt/vmwareapi/driver.py to respect the 80 columns
  contraint

Blueprint nova-python3
Change-Id: I81465661cb8a74778d70ba9b6641073f1effa49b

1 files changed, 2 insertions, 1 deletions

diff --git a/nova/wsgi.py b/nova/wsgi.py
index 1b8a649b08..77db109dd6 100644
--- a/nova/wsgi.py
+++ b/nova/wsgi.py
@@ -33,6 +33,7 @@ from oslo_log import loggers
 from oslo_utils import excutils
 from paste import deploy
 import routes.middleware
+import six
 import webob.dec
 import webob.exc
 
@@ -422,7 +423,7 @@ class Debug(Middleware):
         resp = req.get_response(self.application)
 
         print(('*' * 40) + ' RESPONSE HEADERS')
-        for (key, value) in resp.headers.iteritems():
+        for (key, value) in six.iteritems(resp.headers):
             print(key, '=', value)
         print()