This commit consists of:
1) Yang annotations to the protobuf definitions.  These annotations, when
   added to the relevant proto files in Voltha,  allow us to convert
   the voltha proto schemas into Yang schemas without the need to change the
   model definitions.
2) Update to the Yang parser to handle the above annotations
3) Some initial work on the netconf GET RPCs (work in progress)
4) Cleanup

Change-Id: I5e4f4217850f0beb1c41aca1b2530a41e4f8a809
diff --git a/experiments/netconf/proto2yang/book.proto b/experiments/netconf/proto2yang/book.proto
new file mode 100644
index 0000000..687a7c8
--- /dev/null
+++ b/experiments/netconf/proto2yang/book.proto
@@ -0,0 +1,64 @@
+// See README.txt for information and build instructions.
+
+syntax = "proto3";
+
+package tutorial;
+
+import "google/api/annotations.proto";
+
+import public "yang_options.proto";
+
+option java_package = "com.example.tutorial";
+option java_outer_classname = "AddressBookProtos";
+option csharp_namespace = "Google.Protobuf.Examples.AddressBook";
+
+message House {
+    option (voltha.yang_child_rule) = MOVE_TO_PARENT_LEVEL;
+
+    enum HouseType {
+      MOBILE = 0;
+      SINGLE = 1;
+      TOWN = 2;
+    }
+
+    string myhouse = 1;
+
+    message Door {
+      string colour = 1;
+      string size = 2;
+    }
+}
+
+message Girl {
+    option (voltha.yang_message_rule) = CREATE_BOTH_GROUPING_AND_CONTAINER;
+    repeated House houses = 4;
+}
+
+message Person {
+  option (voltha.yang_message_rule) = CREATE_BOTH_GROUPING_AND_CONTAINER;
+
+  string name = 1;
+  int32 id = 2;        // Unique ID number for this person.
+  string email = 3;
+  repeated string khen = 4;
+  repeated PhoneNumber phones = 5;
+
+  enum PhoneType {
+    MOBILE = 0;
+    HOME = 1;
+    WORK = 2;
+  }
+
+  message PhoneNumber {
+    string number = 1;
+    PhoneType type = 2;
+  }
+
+}
+
+// Our address book file is just one of these.
+message AddressBook {
+   Person people = 1  [(voltha.yang_inline_node).id = 'people',
+                              (voltha.yang_inline_node).type = 'book-Person'] ;
+   Girl girl = 2;
+}