[VOL-936] Missing mocks and comments.
Lowering log level for chatty messages

Change-Id: I4012f3e6d8f8c1d11d20dccb81fa182c02265d77
diff --git a/internal/pkg/core/openolt.go b/internal/pkg/core/openolt.go
index 7343c94..335a424 100644
--- a/internal/pkg/core/openolt.go
+++ b/internal/pkg/core/openolt.go
@@ -174,7 +174,7 @@
 
 //Process_inter_adapter_message sends messages to a target device (between adapters)
 func (oo *OpenOLT) Process_inter_adapter_message(msg *ic.InterAdapterMessage) error {
-	logger.Infow("Process_inter_adapter_message", log.Fields{"msgId": msg.Header.Id})
+	logger.Debugw("Process_inter_adapter_message", log.Fields{"msgId": msg.Header.Id})
 	targetDevice := msg.Header.ProxyDeviceId // Request?
 	if targetDevice == "" && msg.Header.ToDeviceId != "" {
 		// Typical response
@@ -390,6 +390,7 @@
 	return nil, olterrors.ErrNotImplemented
 }
 
+//Get_ext_value retrieves a value on a particular ONU
 func (oo *OpenOLT) Get_ext_value(deviceID string, device *voltha.Device, valueparam voltha.ValueType_Type) (*voltha.ReturnValues, error) {
 	var err error
 	resp := new(voltha.ReturnValues)