deads2k: conditionally serve beta

JobBuild
afe199d0
02-12 17:22		 99011
02-11 21:50		 51b8a031
02-11 21:49		 unknown
02-11 21:47
pull-kubernetes-bazel-build 1364401940603080704 1364382743974121472 1364242625686671360 1364186758169759744 1360278016655101952 1359982721153110016 1359982515581882368
pull-kubernetes-bazel-test 1364401940640829440 1364382744032841728 1364242625728614400 1364186758211702784 1360278016697044992 1359982721996165120 1359982515615436800
pull-kubernetes-conformance-kind-ga-only-parallel 1364401940993150976 1364382744209002496 1364242625963495424 1364186758450778112 1360278016931926016 1359982732951687168 1359982515846123520
pull-kubernetes-dependencies 1364401940670189568 1364382744066396160 1364242625766363136 1364186758253645824 1360278016734793728 1359982723673886720 1359982515665768448
pull-kubernetes-e2e-gce-100-performance 1364401941077037056 1364382744271917056 1364242626034798592 1364186758526275584 1360278017011617792 1359982741302546432 1359982515942592512
pull-kubernetes-e2e-gce-ubuntu-containerd 1364401940707938304 1364382744099950592 1364242625820889088 1364186758283005952 1360278016776736768 1359982725347414016 1359982515703517184
pull-kubernetes-e2e-kind 1364401940892487680 1364371694579355648 1364329388279074816 1364287110843994112 1364242625892192256 1364234309954703360 1364186758366892032 1360300438972272640 1360278016843845632 1359982729550106624 1359982515774820352
pull-kubernetes-e2e-kind-ipv6 1364401940959596544 1364382744179642368 1364242625934135296 1364186758413029376 1360278016894177280 1359982731219439616 1359982515812569088
pull-kubernetes-integration 1364401940762464256 1364382744146087936 1364242625854443520 1364186758320754688 1360278016810291200 1359982727033524224 1359982515741265920
pull-kubernetes-node-e2e 1364401941030899712 1364382744242556928 1364242625997049856 1364186758488526848 1360300439039381504 1360278016969674752 1359982734579077120 1359982515904843776
pull-kubernetes-typecheck 1364401941467107328 1364382744313860096 1364242626517143552 1364186759008620544 1360278017489768448 1359982736252604416 1359982516429131776
pull-kubernetes-verify 1364401943115468800 1364382745639260160 1364242628199059456 1364186760698925056 1360278019175878656 1359982738773381120 1359982518073298944
pull-kubernetes-verify-govet-levee 1364401942289190912 1364382744808787968 1364242627356004352 1364186759851675648 1360278018341212160 1359982737942908928 1359982517242826752