jialaijun: Migrate to structured logs pkg/util/bandwidth/ and /conntrack

JobBuild
1e9f5033
10-13 22:40
99544
10-13 22:40
pull-kubernetes-conformance-kind-ga-only-parallel 1448417726862200832
pull-kubernetes-dependencies 1448417726639902720
pull-kubernetes-e2e-gce-100-performance 1448417726988029952
pull-kubernetes-e2e-gce-ubuntu-containerd 1448417726707011584
pull-kubernetes-e2e-kind 1448417726782509056
pull-kubernetes-e2e-kind-ipv6 1448417726820257792
pull-kubernetes-integration 1448417726744760320
pull-kubernetes-node-e2e-containerd 1448417726941892608
pull-kubernetes-typecheck 1448417727013195776
pull-kubernetes-unit 1448417726895755264
pull-kubernetes-verify 1448417728305041408
pull-kubernetes-verify-govet-levee 1448417727457792000