VOL-2348 Update voltha-openolt-adapter to latest voltha-lib-go;
I/O Errors should trigger unreadiness;
Update tech profile mocks

Change-Id: If245ab38050962af5992e8f0b67823c39e9522e8
diff --git a/mocks/mockTechprofile.go b/mocks/mockTechprofile.go
index 2708592..6fa3c39 100644
--- a/mocks/mockTechprofile.go
+++ b/mocks/mockTechprofile.go
@@ -96,6 +96,11 @@
 	return []*tp_pb.TrafficQueue{{}}, nil
 }
 
+// GetMulticastTrafficQueues to mock techprofile GetMulticastTrafficQueues method
+func (m MockTechProfile) GetMulticastTrafficQueues(tp *tp.TechProfile) []*tp_pb.TrafficQueue {
+	return []*tp_pb.TrafficQueue{{}}
+}
+
 // GetGemportIDForPbit to mock techprofile GetGemportIDForPbit method
 func (m MockTechProfile) GetGemportIDForPbit(tp *tp.TechProfile, Dir tp_pb.Direction, pbit uint32) uint32 {
 	return 0