fix: add missing service account file

[philippeboyd]

also changed the create value from false to true.

[kyle-retool]

Should create be renamed to enabled to mirror the other values?

[philippeboyd]

No because it'll imply that a service account is optional where in Kubernetes a service account is always used. The use case is more: do you want to create a service account or use an existing one, therefore create: true|false is appropriated.

In most cases, you'll always want to create a service account specific to your application.

Other renowned helm charts do this such as Vault or Ambassador

[kyle-retool]

Published version 4.1.1 with this change.