VOL-3419: Replicate voltha flows in openolt agent
- Use the flow_id, symmetric_flow_id, replication_flag and pbit_to_gemport_map
  coming in Flow proto messge to replicate the flow as needed
- Use the CreateQueues and RemoveQueues messages to setup and remove gem_ports
- Use latest gRPC version 1.31.1 which allows fine tuning of gRPC threadpools
  which allows for greating performance.
- Performance numbers when tested with openolt-scale-tester has been better with
  using latest gRPC and threadpool tuning when compared to earlier. It is to be
  noted that the performance is better even with openolt-agent replicating the flow
  now.
- Scale tests with 512 subscribers have been successfull with BAL3.4.7.5 version
- Use openolt proto version 4.0.0
- Use openolt-test (for unit test) image version 2.0.1 (which bundles latest gRPC version 1.31.1)
- These changes are NOT backward compatible and openolt-agent will have a major
  version bump to 3.0.0

Change-Id: I715c804bdf342e60d08cab6c59e1c21b8c5ac1f4
diff --git a/agent/device/generic/vendor.h b/agent/device/generic/vendor.h
index 25cc813..4a94df1 100644
--- a/agent/device/generic/vendor.h
+++ b/agent/device/generic/vendor.h
@@ -18,4 +18,22 @@
 #define __VENDOR_H__
 #define VENDOR_ID "generic"
 #define MODEL_ID  "generic"
+
+// DeviceInfo definitions
+
+#define ONU_ID_START 1
+#define ONU_ID_END 32
+#define MAX_ONUS_PER_PON 32
+
+#define ALLOC_ID_START 1024
+#define ALLOC_ID_END 16383
+
+#define GEM_PORT_ID_START 1024
+#define GEM_PORT_ID_END 65535
+
+#define FLOW_ID_START 1
+#define FLOW_ID_END 65535
+#define MAX_FLOW_ID 65535
+#define INVALID_FLOW_ID 0
+
 #endif