Values.EnvironmentTierSourceDescribes the properties of an environment tier
type nonrec t = {name : String_.t option;The name of this environment tier. Valid values: For Web server tier – WebServer For Worker tier – Worker
*)type_ : String_.t option;The type of this environment tier. Valid values: For Web server tier – Standard For Worker tier – SQS/HTTP
*)version : String_.t option;The version of this environment tier. When you don't set a value to it, Elastic Beanstalk uses the latest compatible worker tier version. This member is deprecated. Any specific version that you set may become out of date. We recommend leaving it unspecified.
*)}