We are looking to migrate from HP ALM to Zephyr Scale. We are currently using Jira on Cloud. From this documentation page: https://support.smartbear.com/zephyr-scale-server/docs/features.html it looks like Zephyr Scale server has many more features that we are interested in (vs Zephyr cloud). Can we run Zephyr Scale server with our Jira Cloud product? How does that work during the trial? ie are we able to evaluate Zephyr Scale Server with Jira Cloud? What are the sytem requirements for our server to host Zephyr Scale?