presubmits:
  kubernetes/enhancements:
    - name: pull-enhancements-verify
      always_run: true
      decorate: true
      spec:
        containers:
          - image: golang:1.11
            command:
              - sh
              - "-c"
              - "export PATH=$PATH:$GOPATH/bin && ./hack/verify.sh"

presubmits:
  kubernetes/enhancements:
    - name: pull-enhancements-verify
      always_run: true
      decorate: true
      spec:
        containers:
          - image: golang:1.12
            command:
              - sh
              - "-c"
              - "export PATH=$PATH:$GOPATH/bin && ./hack/verify.sh"

Update enhancements presubmit to go1.12
Update enhancements presubmit to go1.12
