Use timeout of 5 minutes

Author: jcharum

.travis.yml

@@ -9,6 +9,6 @@ sudo: false
 install:
   - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.22.2
 script:
-  - env GO111MODULE=on golangci-lint run --new-from-rev "$TRAVIS_BRANCH" -v ./...
+  - env GO111MODULE=on golangci-lint --timeout 5m run --new-from-rev "$TRAVIS_BRANCH" -v ./...
   - env GO111MODULE=on go test -v -short ./...