@balasankarc and myself were working on the gitlab-ci pipeline of the omnibus project and we noticed that many parts of the the file were actually duplicated and it would be very useful if we had a way to programatically generate the yaml file using templating. Something like erb in ruby or go-templating for example we can do stuff like ``` operating_systems = ["ubuntu-14.04", "ubuntu-16.04"...] for os in operating_systems: < write jobs for one OS > ```