Merge branch 'winh-yarn-integrity-check-output' into 'master'

Improve output for yarn integrity check

See merge request gitlab-org/gitlab-ce!32569

package.json

 {
   "private": true,
   "scripts": {
-    "check-dependencies": "yarn check --integrity",
+    "check-dependencies": "scripts/frontend/check_dependencies.sh",
     "clean": "rm -rf public/assets tmp/cache/*-loader",
     "dev-server": "NODE_OPTIONS=\"--max-old-space-size=3584\" nodemon -w 'config/webpack.config.js' --exec 'webpack-dev-server --config config/webpack.config.js'",
     "eslint": "eslint --max-warnings 0 --report-unused-disable-directives --ext .js,.vue .",

scripts/frontend/check_dependencies.sh

+#!/usr/bin/env bash
+
+if ! yarn check --integrity 2>&1 > /dev/null
+then
+  echo
+  echo "    $(tput setaf 1)yarn check --integrity$(tput sgr0) failed!"
+  echo "    Your dependencies probably don't match the yarn.lock file."
+  echo "    Please run $(tput setaf 2)yarn install$(tput sgr0) and try again."
+  echo
+  exit 1
+fi