Sets the workload tag, and as the default for which to reset back to.

For example, calling will reset the workload tag back to the default chosen here. To reset the default back to none, pass in an empty string or pass in true to, like so.

Workload tag must be 1 - 63 characters, beginning and ending with an alphanumeric character ([a-z0-9A-Z]) with dashes (-), underscores (_), dots

(.), and alphanumerics between, or an empty string to reset the default back to none.