Apps and credentials-Approving and rejecting access requests

Number of APIs: 3

1. Access requests/Approve an access request PUT {{portal-host-port}}/portal-api/access_requests/7/approve

2. Access requests/Reject an access request PUT {{portal-host-port}}/portal-api/access_requests/9/reject

3. Access requests/Delete an access request DELETE {{portal-host-port}}/portal-api/access_requests/9