VOL-4077: Improve storage usage on etcd
- Do away with unnecessary data storage on etcd if it can be
  reconciled on adapter restart
- For data that needs storage, use lesser footprint if possible
- Use write-through-cache for all data stored on etcd via
  resource manager module
- Use ResourceManager module per interface to localize lock
  contention per PON port

Change-Id: I21d38216fab195d738a446b3f96a00251569e38b
diff --git a/pkg/mocks/mockCoreProxy.go b/pkg/mocks/mockCoreProxy.go
index e143fbd..f572f09 100644
--- a/pkg/mocks/mockCoreProxy.go
+++ b/pkg/mocks/mockCoreProxy.go
@@ -22,7 +22,7 @@
 	"errors"
 	"fmt"
 
-	"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
+	"github.com/opencord/voltha-lib-go/v5/pkg/kafka"
 	"github.com/opencord/voltha-protos/v4/go/voltha"
 )
 
@@ -132,6 +132,11 @@
 	if parentdeviceID == "" {
 		return nil, errors.New("no deviceID")
 	}
+	for k, v := range mcp.Devices {
+		if k == "olt" {
+			return v, nil
+		}
+	}
 	return nil, nil
 }