Update golinter to 1.17.1

.travis.yml

@@ -23,12 +23,9 @@ go:
 
 go_import_path: sigs.k8s.io/kustomize
 
-env:
-  - GOLANGCI_RELEASE="v1.12"
-
 before_install:
   - source ./travis/consider-early-travis-exit.sh
-  - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $GOPATH/bin ${GOLANGCI_RELEASE}
+  - curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b $(go env GOPATH)/bin v1.17.1
   - go get -u github.com/monopole/mdrip
   # The following would install Helm if needed for some reason.
   # - wget https://storage.googleapis.com/kubernetes-helm/helm-v2.13.1-linux-amd64.tar.gz