Create a document with all deployed servers

[kahummer]

Having a list of all deployed gisida servers is critical to manage resources efficiently. Looking this up in aws is a pain since we can't filter to get gisida related sites. Recommended solution: Implement a script that gets the list of all records from playbooks inventories. Example: https://github.com/onaio/playbooks/blob/master/docs/deployed-servers/superset.md

[moshthepitt]

@kahummer this is how we are doing it for Superset https://github.com/onaio/playbooks/blob/master/docs/deployed-servers/superset.md