jpbetz: Upgrade to etcd 3.3.16 client

JobBuild
83712
10-10 07:19
bf323840
10-10 07:18
pull-kubernetes-bazel-build 1182193617947594752
pull-kubernetes-bazel-test 1182193617960177665
pull-kubernetes-dependencies 1182193617964371970
pull-kubernetes-e2e-gce 1182193617976954881
pull-kubernetes-e2e-gce-device-plugin-gpu 1182193617976954880
pull-kubernetes-e2e-gce-rbe 1182193617964371969
pull-kubernetes-integration 1182193617960177666
pull-kubernetes-kubemark-e2e-gce-big 1182193617960177664
pull-kubernetes-node-e2e 1182193617989537792
pull-kubernetes-typecheck 1182193617964371968
pull-kubernetes-verify 1182193617964371971