rifelpet: Temporarily skip MetricsGrabber test

JobBuild
12090
08-03 00:19
pull-kops-bazel-build 1422351294592454656
pull-kops-bazel-test 1422351294638592000
pull-kops-e2e-kubernetes-aws 1422351294558900224
pull-kops-verify-bazel 1422351294672146432
pull-kops-verify-boilerplate 1422351294768615424
pull-kops-verify-generated 1422351294701506560
pull-kops-verify-gofmt 1422351294814752768
pull-kops-verify-gomod 1422351294735060992
pull-kops-verify-govet 1422351294844112896
pull-kops-verify-staticcheck 1422351294873473024