Async/streaming gRPC client/server proto

This experiment was to fine-tune how we can implement
async gRPC client and server code inside a Twisted
python app.

Change-Id: I945014e27f4b9d6ed624666e0284cc298548adb3

Major cleanup of openflow_13.proto

Change-Id: I4e54eaf87b682124ec518a0ade1a6050a6ec6da8

Relocated openflow_13.proto to voltha

Change-Id: I66ae45a9142d180c2c6651e75c7a1ee08aef7ef8

Removed forced utest from make build

Change-Id: If0da58e9d135ebde6ca68c3316688a03a7b10f2f

twisted openflow agent first pass

Change-Id: Ibe5b4727ccfe92e6fd464ccd3baf6275569ef5d3

store openflow derived files

Change-Id: Ib3e1384bb2ca2a9c0872767f7b793f96b0a154e2

Minor cleanup

Change-Id: I1280ed3acb606121b616a0efd573f5f59d010dca

Factored out common utils

Change-Id: Icd86fcd50f60d0900924674cbcd65e13e47782a1

Refactored twisted agent

Change-Id: I71f26ce5357a4f98477df60b8c5ddc068cf75d43

Relocated openflow agent to ofagent

... and preserved obsolete working (non-twisted) agent under
~/obsolete, so we can still run the olt-oftest and pass tests,
unit the new twisted based agent reaches that maturity point.

Change-Id: I727f8d7144b1291a40276dad2966b7643bd7bc4b

olt-oftest in fake mode works with new agent

Change-Id: I43b4f5812e8dfaa9f45e4a77fdcf6c30ac520f8d

Initial ofagent/voltha operation

Change-Id: Ia8104f1285a6b1c51635d36d7d78fc113f800e79

Additional callouts to Voltha

Change-Id: If8f483d5140d3c9d45f22b480b8d33249a29cd4e

More gRPC calls

Change-Id: I7d24fadf9425217fb26ffe18f25359d072ef38fa

Flow add/list now works

Change-Id: Ie3e3e73108645b47891cef798fc61372a022fd93

Missed some files

Change-Id: I29e81238ff1a26c095c0c73e521579edf7092e21
diff --git a/ofagent/protos/third_party/google/api/annotations_pb2.py b/ofagent/protos/third_party/google/api/annotations_pb2.py
new file mode 100644
index 0000000..2121854
--- /dev/null
+++ b/ofagent/protos/third_party/google/api/annotations_pb2.py
@@ -0,0 +1,51 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: third_party/google/api/annotations.proto
+
+import sys
+_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf import descriptor_pb2
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+from google.api import http_pb2 as google_dot_api_dot_http__pb2
+from google.protobuf import descriptor_pb2 as google_dot_protobuf_dot_descriptor__pb2
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='third_party/google/api/annotations.proto',
+  package='google.api',
+  syntax='proto3',
+  serialized_pb=_b('\n(third_party/google/api/annotations.proto\x12\ngoogle.api\x1a\x15google/api/http.proto\x1a google/protobuf/descriptor.proto:E\n\x04http\x12\x1e.google.protobuf.MethodOptions\x18\xb0\xca\xbc\" \x01(\x0b\x32\x14.google.api.HttpRuleB$\n\x0e\x63om.google.apiB\x10\x41nnotationsProtoP\x01\x62\x06proto3')
+  ,
+  dependencies=[google_dot_api_dot_http__pb2.DESCRIPTOR,google_dot_protobuf_dot_descriptor__pb2.DESCRIPTOR,])
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+
+HTTP_FIELD_NUMBER = 72295728
+http = _descriptor.FieldDescriptor(
+  name='http', full_name='google.api.http', index=0,
+  number=72295728, type=11, cpp_type=10, label=1,
+  has_default_value=False, default_value=None,
+  message_type=None, enum_type=None, containing_type=None,
+  is_extension=True, extension_scope=None,
+  options=None)
+
+DESCRIPTOR.extensions_by_name['http'] = http
+
+http.message_type = google_dot_api_dot_http__pb2._HTTPRULE
+google_dot_protobuf_dot_descriptor__pb2.MethodOptions.RegisterExtension(http)
+
+DESCRIPTOR.has_options = True
+DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\016com.google.apiB\020AnnotationsProtoP\001'))
+import grpc
+from grpc.beta import implementations as beta_implementations
+from grpc.beta import interfaces as beta_interfaces
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+# @@protoc_insertion_point(module_scope)