List all approved reviews for given generic directory id (pk) partner entry slug (slug).
ie: GET /reviews/<directory_id>/<partner_entry_slug>/
Args:
request: The incoming request object.
pk: The generic directory id.
slug: The partner entry slug.
Returns:
A paginated list of approved reviews.
sessionid: ********************username:passwordAuthorization: Basic *****************curl --location --request GET 'https://v1.api.partnerpage.io/reviews///'