rifelpet: Upgrade go to 1.13

JobBuild
024c8a92
11-20 18:00
pull-kops-bazel-build 1197458073883512838 1197213186726563847
pull-kops-bazel-test 1197458073883512836 1197213186726563849
pull-kops-e2e-kubernetes-aws 1197458073883512833 1197216332878188544 1197213186726563846
pull-kops-verify-bazel 1197458073883512832 1197213186726563844
pull-kops-verify-boilerplate 1197458073883512835 1197213186726563840
pull-kops-verify-generated 1197458073879318531 1197213186726563845
pull-kops-verify-gofmt 1197458073883512839 1197213186726563841
pull-kops-verify-gomod 1197458073879318530 1197213186726563842
pull-kops-verify-govet 1197458073883512834 1197213186726563843
pull-kops-verify-packages 1197458073883512837 1197213186726563848