Jenkins Build: Automatic deployment of app under test to github pages

[bruderol]

Introduce a simple step in the build pipeline to publish current verison of the application under test on github page of the repo

Acceptance criterias

• Cureent version of appication under test on master branch is automatically published to our github page under http://scenarioo.org/pizza-delivery
• The links on the README page are adjusted accordingly

** Implementation details**

• move application under test from prod to src/main/resources/app or something similar (more realistic compared to a real project, also by default picked up as resource directory by gradle?)
• In Jenkins pipeline: Everytime this directory has changes deploy its content to gh-pages branch (into root dir) - by commit and pushing on github (using technical scenarioo-ci user)
• Adjust README to directly link to root of github pages for seing the app under test

[bruderol]

maybe checkout this tool for publishing it: https://www.npmjs.com/package/gh-pages

when done, we should as well check to deploy our docs inside our webpage automatoically - but this is another story!