Build #12

Parameters
 BRANCH
The repository branch to checkout.
 VERSION
The build version number. Used to generate download file names.
 META_REPOSITORY_URL
URL of the repository the meta data compiler will be published at.
 META_PUBLISH_URL
Path to the repository the meta data compiler will be published at.
 ELK_TARGET_DIR
Path to the directory the build will copy all downloadable artifacts to.