Configure Jenkins to find Xvfb in slave nodes

The installation path of Xvfb was not preconfigured in Jenkins. This
led to failure of build jobs, if this configuration wasn't done
manually.
This change implements adding the necessary configuration to Jenkins
at build time.

Change-Id: I877302e606aaf7e33442cd68f1d0e14fde316101
2 files changed
tree: 8ec5480bc2c384f522228f01c5398877ba9dc030
  1. jenkins/
  2. jenkins-docker/
  3. worker/
  4. .gitignore