Increate the mocha test timeout in CI

The CI server can be slow from time to time, give it more time

karma.common.conf.js

@@ -5,6 +5,7 @@ module.exports = function(config) {
       client: {
         mocha: {
           ui: 'tdd',
+          timeout: 2000 * (process.env.CI === undefined ? 1 : 10)
         },
       },
       files: [