
The idea is that Zuul passes a lot of useful information, such as the project name, target branch etc., as ZUUL_* options within the JSON job data. Let's pass all of these variables to the launched shell script. This will make it possible to e.g. have a single script that can do the "right thing" for different projects with distinct build steps, etc. Change-Id: I6f57ed19e9eef1b987fe2493d409b3ee51af22b6