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>. Upgrade to go1.9.2 **What this PR does / why we need it**: Use go1.9.2, containing a number of bug fixes: https://github.com/golang/go/issues?q=milestone%3AGo1.9.2 **Release note**: ```release-note Upgrade to go1.9.2 ```