Versions

What CLI version are you using.
the 'main' branch

What Nodejs version are you using
v12.14.1

What command-line interpreters are you using
API

What OS are you using
Windows 10

Describe the bug

Below is the code snippet using bf-cli's LU parser and generate a LUIS JSON object. It can generate an erroneous entity label which is not specified in the input LU file.
Will share the LU input and JSON through email as the files are under NDA.

const luisBuildNoValidate: any = require('@microsoft/bf-lu/lib/parser/luis/luisCollate').build;

const luObject: any = {
  content: luContent,
  id: luFile,
};
const luisObject: any = await luisBuildNoValidate([luObject], false, '', OrchestratorHelper.findLuFiles);

To Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

Give a clear and concise description of what you expected to happen.
LU Parser should not generate an entity label in JSON if not specified in the LU input.

Screenshots

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Additional context

Add any other context about the problem here.

[bug]