New kubernetes cluster collector for ARM aarch64

Hey,
Thx for the info that cadvisor now supports armv71 and aarch64, that’s good news as this is the major dependency around it.
We would be very happy, if you take this opportunity to do a pull request. The first element would probably be changes to the build pipeline and the second is then around adaptations to the helm charts to not only consider pure arm environments, but also mixed environment with e.g. amd64 and aarch64.