INstall curl before install chromedriver in gitlab ci

.gitlab-ci.yml

@@ -13,6 +13,7 @@ test:
 
 functional-test:
   before_script:
+    - apt-get install curl
     - curl https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb -o /chrome.deb
     - dpkg -i /chrome.deb || apt-get install -yf
     - rm /chrome.deb