Sync jsonutils from openstack-common.

In addition to the following changes from openstack-common, this patch
includes some tweak to nova unit tests.  timeutils.strtime() will raise
an exception if the year in a datetime object is before 1900.

Changes from openstack-common:

    commit ce3071437d1871f77c4d8573cbe5f4ea8c817650
    Author: Russell Bryant <rbryant@redhat.com>
    Date:   Mon Jul 16 10:30:25 2012 -0400

        Use strtime() in to_primitive() for datetime objs.

        This patch updates jsonutils.to_primitive() to use timeutils.strtime()
        to convert a datimetime object to a string instead of just using str().
        This ensures that we can easily convert the string back to a datetime
        using timeutils.parse_strtime().

        Required for the nova blueprint no-db-messaging.

    commit 4c9d439ef24f5afdd74aa9153aa8fc772051e6cb
    Author: Tim Daly Jr <timjr@yahoo-inc.com>
    Date:   Tue Jun 26 02:48:42 2012 +0000

        Add 'filedecoder' method to the jsonutils wrapper module.

        Fixes bug #1017765

        After version 3.3.2, the anyjson library will throw a KeyError if
        filedecoder isn't present.  The filedecoder is just like the decoder
        except it takes a file instead of a string, like json.load() instead
        of json.loads().

Change-Id: Ib51f0da8641c035371e09047de9abe3cb83203e9

1 files changed, 8 insertions, 2 deletions

diff --git a/nova/openstack/common/jsonutils.py b/nova/openstack/common/jsonutils.py
index 752266981..5f6a7edab 100644
--- a/nova/openstack/common/jsonutils.py
+++ b/nova/openstack/common/jsonutils.py
@@ -39,6 +39,8 @@ import itertools
 import json
 import xmlrpclib
 
+from nova.openstack.common import timeutils
+
 
 def to_primitive(value, convert_instances=False, level=0):
     """Convert a complex object into primitives.
@@ -101,7 +103,7 @@ def to_primitive(value, convert_instances=False, level=0):
                                     level=level)
             return o
         elif isinstance(value, datetime.datetime):
-            return str(value)
+            return timeutils.strtime(value)
         elif hasattr(value, 'iteritems'):
             return to_primitive(dict(value.iteritems()),
                                 convert_instances=convert_instances,
@@ -130,11 +132,15 @@ def loads(s):
     return json.loads(s)
 
 
+def load(s):
+    return json.load(s)
+
+
 try:
     import anyjson
 except ImportError:
     pass
 else:
     anyjson._modules.append((__name__, 'dumps', TypeError,
-                                       'loads', ValueError))
+                                       'loads', ValueError, 'load'))
     anyjson.force_implementation(__name__)