bobbypage: Revert "Revert "cluster: Use python3 everywhere""

JobBuild
101722
05-04 04:50
dac06aef
05-04 04:48
pull-kubernetes-conformance-kind-ga-only-parallel 1389664936392658944 1389441887751901184
pull-kubernetes-dependencies 1389664936266829824 1389441887630266368
pull-kubernetes-e2e-gce-100-performance 1389664936480739328 1389441887852564480
pull-kubernetes-e2e-gce-ubuntu-containerd 1389664936296189952 1389441887655432192
pull-kubernetes-e2e-kind 1389664936338132992 1389461911384363008 1389441887705763840
pull-kubernetes-e2e-kind-ipv6 1389710866668064768 1389701369660706816 1389664936367493120 1389461911422111744 1389441887730929664
pull-kubernetes-integration 1389664936312967168 1389441887684792320
pull-kubernetes-node-crio-e2e 1389710866693230592 1389701369690066944 1389461911447277568 1389441887819010048
pull-kubernetes-node-e2e 1389664936438796288 1389441887798038528
pull-kubernetes-typecheck 1389664936497516544 1389441888452349952
pull-kubernetes-unit 1389664936417824768 1389441887777067008
pull-kubernetes-verify 1389664937944551424 1389441890130071552
pull-kubernetes-verify-govet-levee 1389664937105690624 1389441889295405056