## Description
**Fixed below flaky tests**
- Regression/ClientSide/AdminSettings/Admin_settings_spec.js
- Regression/ClientSide/ExplorerTests/Admin_settings_2_spec.js
Modified AuthenticatedApiDatasource_spec.js ,
RestApiOAuth2Validation_spec.ts to use TED OAuth
## Type of change
- Flaky test fix
## How Has This Been Tested?
- Cypress test runs
## Checklist:
### QA activity:
- [ ] Test plan has been approved by relevant developers
- [ ] Test plan has been peer reviewed by QA
- [ ] Cypress test cases have been added and approved by either SDET or
manual QA
- [ ] Organized project review call with relevant stakeholders after
Round 1/2 of QA
- [ ] Added Test Plan Approved label after reveiwing all Cypress test
05c2b7eca7