:build-days-to-keep: Days to keep build logs in Jenkins. (default: 7)
:build-timeout: Timeout in minutes before aborting build. (default: 90)
:git-url: URL clone project from. (default: $GIT_URL/$PROJECT)
+ :openstack: Packer template uses an OpenStack builder (default: true).
+ :openstack-cloud: Sets OS_CLOUD variable to the value of this parameter.
+ (default: vex).
:packer-cloud-settings: Name of settings file containing credentials
for the cloud that packer will build on. (default: packer-cloud-env)
:packer-version: Version of packer to install / use in build. (default: 1.0.2)