Replace jsonutils by common json package

Should remove oslo.serialization which only use at one test-case.
This change will help project do not depends this package,
and let's use the regular json attribute anyway.

Change-Id: I01af1e1b09fb9866acf54fc7a19aedfaab34a684

cyborg/accelerator/common/exception.py

@@ -17,7 +17,6 @@
 import collections
 
 from oslo_log import log as logging
-from oslo_serialization import jsonutils
 import six
 from six.moves import http_client
 
@@ -37,7 +36,7 @@ def _ensure_exception_kwargs_serializable(exc_class_name, kwargs):
         constructor.
     :returns: a dictionary of serializable keyword arguments.
     """
-    serializers = [(jsonutils.dumps, _('when converting to JSON')),
+    serializers = [(json.dumps, _('when converting to JSON')),
                    (six.text_type, _('when converting to string'))]
     exceptions = collections.defaultdict(list)
     serializable_kwargs = {}

requirements.txt

@@ -14,7 +14,6 @@ oslo.context>=2.14.0 # Apache-2.0
 oslo.messaging!=5.25.0,>=5.24.2 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0
-oslo.serialization!=2.19.1,>=1.10.0 # Apache-2.0
 oslo.db>=4.24.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 oslo.versionedobjects>=1.17.0 # Apache-2.0