Adding payload factories

This change adds a set of payload factories to the factory suite, which
handle the construction of default request/response payload objects for
KMIP operations. These factories replace the use of payload operation
dictionaries for dynamic payload object lookup. A payload factory test
suite and minor logging tweaks are included.

kmip/core/factories/payloads/response.py

@@ -0,0 +1,40 @@
+# Copyright (c) 2014 The Johns Hopkins University/Applied Physics Laboratory
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from kmip.core.factories.payloads import PayloadFactory
+
+from kmip.core.messages.payloads import create
+from kmip.core.messages.payloads import destroy
+from kmip.core.messages.payloads import get
+from kmip.core.messages.payloads import locate
+from kmip.core.messages.payloads import register
+
+
+class ResponsePayloadFactory(PayloadFactory):
+
+    def _create_create_payload(self):
+        return create.CreateResponsePayload()
+
+    def _create_register_payload(self):
+        return register.RegisterResponsePayload()
+
+    def _create_locate_payload(self):
+        return locate.LocateResponsePayload()
+
+    def _create_get_payload(self):
+        return get.GetResponsePayload()
+
+    def _create_destroy_payload(self):
+        return destroy.DestroyResponsePayload()