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>. The lbaas.opts.SubnetId should be set by subnet id. Fix #58145 The getSubnetIDForLB() should return subnet id rather than net id. **Release note**: ```release-note NONE ```