Resolve "Requesting information from the Controller via NBI takes very long"

Description

Related Issue

#230 (closed)

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

controller/api/device.go

@@ -127,7 +127,7 @@ func GetFlattenedDevices(ctx context.Context, addr, pid string) (*ppb.GetFlatten
 		return nil, err
 	}
 
-	req := &ppb.GetFlattenedOndListRequest{
+	req := &ppb.GetOndListRequest{
 		Timestamp: time.Now().UnixNano(),
 		Pid:       pid,
 	}