overseer.go
func sanityCheck() bool {
	//sanity check
	if token := os.Getenv(envBinCheck); token != "" {
		fmt.Fprint(os.Stdout, token)
		return true
	}
	//legacy sanity check using old env var
	if token := os.Getenv(envBinCheckLegacy); token != "" {
		fmt.Fprint(os.Stdout, token)
		return true
	}
	return false
}
func sanityCheck() bool {
	//sanity check
	if token := os.Getenv(envBinCheck); token != "" {
		fmt.Fprint(os.Stdout, token)
		return true
	}
	//legacy sanity check using old env var
	if token := os.Getenv(envBinCheckLegacy); token != "" {
		fmt.Fprint(os.Stdout, token)
		return true
	}
	return false
}
//sanityCheck returns true if a check was performed