adammw: disruptioncontroller: check for scale subresource correctly

JobBuild
af3594df
06-14 22:53		 d5c6ed2c
06-14 07:23		 109957
05-16 08:00		 d12b5dd9
05-16 07:59
pull-kubernetes-conformance-kind-ga-only-parallel 1536844350535766016 1536610355608817664 1526110025473331200
pull-kubernetes-dependencies 1536844350326050816 1536610355424268288 1526110025301364736
pull-kubernetes-e2e-gce-100-performance 1536844350653206528 1536610355713675264 1526110025582383104
pull-kubernetes-e2e-gce-ubuntu-containerd 1536844350376382464 1536610355466211328 1526110025330724864
pull-kubernetes-e2e-kind 1536844350456074240 1536610355545903104 1526110025402028032
pull-kubernetes-e2e-kind-ipv6 1536844350493822976 1536610355579457536 1526110025443971072
pull-kubernetes-integration 1536844350397353984 1536610355499765760 1526110025368473600
pull-kubernetes-node-e2e-containerd 1536844350607069184 1536610355671732224 1526110025527857152
pull-kubernetes-typecheck 1536844350686760960 1536610355738841088 1526110025615937536
pull-kubernetes-unit 1539029887187161088 1536844350577709056 1536610355646566400 1526110025502691328
pull-kubernetes-verify 1536844352016355328 1536610357118767104 1526110026974892032
pull-kubernetes-verify-govet-levee 1536844351152328704 1536610356271517696 1526110026152808448