Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Move 1.6.11 changelog to CHANGELOG-1.6.md **What this PR does / why we need it**: We have moved 1.6.* changelog to CHANGELOG-1.6.md. So the latest 1.6.11 changelog should be in CHANGELOG-1.6.md. **Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes # ref: #48985 https://github.com/kubernetes/kubernetes/pull/52719 **Special notes for your reviewer**: /cc @enisoc We may want to move 1.7.* changelog to a separate file CHANGELOG-1.7.md when 1.8.0 is live. **Release note**: ```release-note NONE ```