func IsSupportedArch(arch string) bool {
	for _, a := range AllSupportedArches {
		if a == arch {
			return true
		}
	}
	return false
}
// IsSupportedArch returns true if arch is one supported by Juju.
IsSupportedArch returns true if arch is one supported by Juju.
// IsSupportedArch returns true if arch is one supported by Juju .
func IsSupportedArch(arch string) bool {
	for _, a := range AllSupportedArches {
		if a == arch {
			return true
		}
	}
	return false
}
func IsSupportedArch ( arch string ) bool { for _ , a := range AllSupportedArches { if a == arch { return true } } return false }
IsSupportedArch returns true if arch is one supported by Juju.
IsSupportedArch returns true if arch is one supported by Juju .