GH-210: fixed scope parameter issue

[pulguptaAdobe]

Description

All operations which needs a token are failing when using OAuth based workspace

Related Issue

Motivation and Context

In the actual API call parameter-name is scope but sdk is using scopes

Sample Curl call

curl -X POST 'https://ims-na1-stg1.adobelogin.com/ims/token/v3' -H 'Content-Type: application/x-www-form-urlencoded' -d 'grant_type=client_credentials&client_id=xxxxx&client_secret=xxxxxx&scope=yyyy,zzzzz'

How Has This Been Tested?

I deployed the local build on AEM cloud and tested & the fix is working fine.

Screenshots (if appropriate):

Types of changes

• [x] 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:

• [ ] I have signed the Adobe Open Source CLA.
• [ ] 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.