refer to accScript.sh from module path, not root path.
refer to accScript.sh from module path, not root path.

Otherwise when terraform-google-forseti is used as a module accScript.sh
execution fails. (also it's no longer in the scripts/ directory.

forseti-security/terraform-google-forseti,forseti-security/terraform-google-forseti,forseti-security/terraform-google-forseti