CLOUDP-73834: mongocli iam users invite return 404 error for CM

[andreaangiolillo]

Proposed changes

Jira ticket: CLOUDP-73834

Checklist

• I have signed the MongoDB CLA
• I have added tests that prove my fix is effective or that my feature works
• I have added any necessary documentation (if appropriate)
• I have run make fmt and formatted my code

Further comments

mongocli iam users invite --username test22@gmail.com --password p@sSW0rd --email test22@gmail.com --firstName kanchana --lastName sekhar --country US -P cm --output json

{
  "id": "5f857aa19cea9815acee50fd",
  "emailAddress": "test22@gmail.com",
  "firstName": "kanchana",
  "lastName": "sekhar",
  "links": [
    {
      "rel": "self",
      "href": "https://cloud-dev.mongodb.com/api/public/v1.0/users/5f857aa19cea9815acee50fd"
    },
    {
      "rel": "http://cloud.mongodb.com/whitelist",
      "href": "https://cloud-dev.mongodb.com/api/public/v1.0/users/5f857aa19cea9815acee50fd/whitelist"
    }
  ],
  "username": "test22@gmail.com",
  "country": "US"
}

[gssbzn]

LGTM