Runner: Create a partner and lock updates from the Management Console for them

Number of APIs: 5

1. Issue a JWT token POST {{base_url}}/api/2/idp/token

2. Create a partner tenant POST {{base_url}}/api/2/tenants

3. Lock a partner tenant PUT {{base_url}}/api/2/tenants/{{partner_tenant_id}}

4. Get available offering items for a partner tenant GET {{base_url}}/api/2/tenants/{{my_tenant_id}}/offering_items/available_for_child?edition=*&kind=partner

5. Set offering items for a partner tenant PUT {{base_url}}/api/2/tenants/{{partner_tenant_id}}/offering_items