prevent dev-tools from updating go.mod

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

.travis.yml

@@ -25,7 +25,7 @@ before_install:
   - sudo apt-get -q update
 
 install:
-  - go get -u github.com/vbatts/git-validation
+  - cd /tmp && go get -u github.com/vbatts/git-validation
     # TODO: Add enforcement of license
     # - go get -u github.com/kunalkushwaha/ltag
   - cd $TRAVIS_BUILD_DIR

script/setup/install-dev-tools

@@ -5,5 +5,7 @@
 #
 set -eu -o pipefail
 
+# prevent updating go.mod of the project
+cd /tmp
 go get -u github.com/golangci/golangci-lint/cmd/golangci-lint
 go get -u github.com/cpuguy83/go-md2man