Sync the VPA fork with the upstream/vpa-release-1.2

[ialidzhikov]

What this PR does / why we need it: We found a regression in VPA 1.2.0: see https://github.com/kubernetes/autoscaler/pull/7161. As we merged many PRs that depend on the VPA 1.2.0 we decided to cut a release from the fork. @plkokanov and @voelzmo anyways wanted to use a custom vpa-recommender image with additional logging to debug one recurring issue.

• 1st commit: Sync the vertical-pod-autoscaler/ dir with the content from upstream/vpa-release-1.2 branch I used:

  git checkout upstream/vpa-release-1.2 vertical-pod-autoscaler/

  This intentionally reverts the additional logging added in https://github.com/gardener/autoscaler/pull/299. @plkokanov will raise a new PR about it with small modifications

2. 2nd commit: Bumps the VPA version to 1.2.1 so that we can cut a new patch release
3. 3rd and 4th commit are cherry-picks from https://github.com/kubernetes/autoscaler/pull/7161

Which issue(s) this PR fixes: N/A

Special notes for your reviewer: N/A

Release note:

NONE