ONOS-6714 DisjointPath Protobuf model

Change-Id: I7d37ca07531c2e6fe52b1a3bc84388e3a59d2c03
diff --git a/incubator/protobuf/models/src/main/proto/net/DisjointPathProto.proto b/incubator/protobuf/models/src/main/proto/net/DisjointPathProto.proto
new file mode 100644
index 0000000..55d916c
--- /dev/null
+++ b/incubator/protobuf/models/src/main/proto/net/DisjointPathProto.proto
@@ -0,0 +1,13 @@
+syntax = "proto3";
+option java_package = "org.onosproject.grpc.net.models";
+
+package net;
+
+import "net/PathProto.proto";
+
+// Corresponds to org.onosproject.net.DisjointPath.
+message DisjointPathProto {
+    net.PathProto primary = 1;
+    net.PathProto backup  = 2;
+    map<string, string> annotations = 3;
+}
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