Make **.values.istio.hardened.enabled composite
For every package, inside the umbrella repo, in their individual values.yaml, make `.istio.hardened.enabled` use `**.values.istio.hardened.enabled` in chart/Values.yaml if it is set and the value from `.Values.istio.hardened.enabled` if not.
NOTE: `.Values.istio.hardened.enabled` should remain false for now.
issue