We noticed that alerts sent to Opsgenie using the Integrations is using "https://api.opsgenie.com/v2/alerts" URL, which causes Opsgenie to mis-categorize the alerts for all customers, according to Opsgenie themselves.

Issue re-production steps:
* Create a team in Opsgenie or use an existing team (use a team that is NOT used for the Default API integration)
* Create a MongoDB integration in that team and take note of the API key
* Create an Opsgenie Integration in MongoDB and use that API key
* Generate an alert or Test the integration
* Verify in Opsgenie that the test alert did NOT get assigned to the team you created the integration for, but instead, it got assigned to the team that is set as the team for the Default API integration

Please use https://api.opsgenie.com/v1/json/mongodbcloud?apiKey=[your api key] URL to resolve the issue, so OpsGenie can properly categorize the alerts.