remove work around for golangci-lint installation

as golangci/golangci-lint#575
is fixed now.removing the workaround in CI

Signed-off-by: Madhu Rajanna <[email protected]>

Author: Madhu-1

.travis.yml

@@ -43,9 +43,8 @@ jobs:
         - pip install --user --upgrade pip
         - pip install --user yamllint
         # install golangci-lint
-        # workaround for https://github.com/golangci/golangci-lint/issues/575
         - curl -sf
-          "https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh"
+          "https://install.goreleaser.com/github.com/golangci/golangci-lint.sh"
           | bash -s -- -b $GOPATH/bin "${GOLANGCI_VERSION}"
       script:
         - make test || travis_terminate 1;