useForwardHeaders is not supported by latest hawkbit version

[superkartoffel]

As per [1] and [2] hawkbit does not support the configuration useForwardHeaders anymore. I suggest to remove it from the default values of the hawkbit helm chart: https://github.com/eclipse/packages/blob/master/charts/hawkbit/values.yaml#L127

and add forward-headers-strategy=NATIVE instead, as suggested by [1]

[1] https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.2-Release-Notes#deprecations-in-spring-boot-22 [2] https://github.com/eclipse/hawkbit/issues/1217