This commit consists of the following:
1) The kafka messaging proxy in Twisted python for adapters
2) Initial implementation and containerization of ponsim OLT adapter
and ponsim ONU adapter
3) Initial submission of request and response facade in both Twisted
python and Go Language
4) Initial implementation of device management and logical device management
in the Core
5) Update to the log module to allow dynamic setting of log level per
package using the gRPC API
6) Bug fixes and minor changes

Change-Id: Ia8f033da84cfd08275335bae9542802415e7bb0f
diff --git a/adapters/common/utils/json_format.py b/adapters/common/utils/json_format.py
new file mode 100644
index 0000000..c18d013
--- /dev/null
+++ b/adapters/common/utils/json_format.py
@@ -0,0 +1,105 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# 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.
+"""
+Monkey patched json_format to allow best effort decoding of Any fields.
+Use the additional flag (strict_any_handling=False) to trigger the
+best-effort behavior. Omit the flag, or just use the original json_format
+module fot the strict behavior.
+"""
+
+from google.protobuf import json_format
+
+class _PatchedPrinter(json_format._Printer):
+
+    def __init__(self, including_default_value_fields=False,
+                 preserving_proto_field_name=False,
+                 strict_any_handling=False):
+        super(_PatchedPrinter, self).__init__(including_default_value_fields,
+                                              preserving_proto_field_name)
+        self.strict_any_handling = strict_any_handling
+
+    def _BestEffortAnyMessageToJsonObject(self, msg):
+        try:
+            res = self._AnyMessageToJsonObject(msg)
+        except TypeError:
+            res = self._RegularMessageToJsonObject(msg, {})
+        return res
+
+
+def MessageToDict(message,
+                  including_default_value_fields=False,
+                  preserving_proto_field_name=False,
+                  strict_any_handling=False):
+    """Converts protobuf message to a JSON dictionary.
+
+    Args:
+      message: The protocol buffers message instance to serialize.
+      including_default_value_fields: If True, singular primitive fields,
+          repeated fields, and map fields will always be serialized.  If
+          False, only serialize non-empty fields.  Singular message fields
+          and oneof fields are not affected by this option.
+      preserving_proto_field_name: If True, use the original proto field
+          names as defined in the .proto file. If False, convert the field
+          names to lowerCamelCase.
+      strict_any_handling: If True, converion will error out (like in the
+          original method) if an Any field with value for which the Any type
+          is not loaded is encountered. If False, the conversion will leave
+          the field un-packed, but otherwise will continue.
+
+    Returns:
+      A dict representation of the JSON formatted protocol buffer message.
+    """
+    printer = _PatchedPrinter(including_default_value_fields,
+                              preserving_proto_field_name,
+                              strict_any_handling=strict_any_handling)
+    # pylint: disable=protected-access
+    return printer._MessageToJsonObject(message)
+
+
+def MessageToJson(message,
+                  including_default_value_fields=False,
+                  preserving_proto_field_name=False,
+                  strict_any_handling=False):
+  """Converts protobuf message to JSON format.
+
+  Args:
+    message: The protocol buffers message instance to serialize.
+    including_default_value_fields: If True, singular primitive fields,
+        repeated fields, and map fields will always be serialized.  If
+        False, only serialize non-empty fields.  Singular message fields
+        and oneof fields are not affected by this option.
+    preserving_proto_field_name: If True, use the original proto field
+        names as defined in the .proto file. If False, convert the field
+        names to lowerCamelCase.
+    strict_any_handling: If True, converion will error out (like in the
+        original method) if an Any field with value for which the Any type
+        is not loaded is encountered. If False, the conversion will leave
+        the field un-packed, but otherwise will continue.
+
+  Returns:
+    A string containing the JSON formatted protocol buffer message.
+  """
+  printer = _PatchedPrinter(including_default_value_fields,
+                            preserving_proto_field_name,
+                            strict_any_handling=strict_any_handling)
+  return printer.ToJsonString(message)
+
+
+json_format._WKTJSONMETHODS['google.protobuf.Any'] = [
+    '_BestEffortAnyMessageToJsonObject',
+    '_ConvertAnyMessage'
+]
+
+json_format._Printer._BestEffortAnyMessageToJsonObject = \
+    json_format._Printer._AnyMessageToJsonObject