new generateCompositeStagingSiteMetadata.sh (incomplete) for JBDS-2741 / JBIDE-15483
JBDS-2741 publish to builds/staging/CI//-B instead of builds/staging{,.previous}/
JBDS-2741 check if jbosstools-cleanup.sh exists locally before fetching it from github
add TODO marker for updating the examples; will also need to update jbosstools-promote job accordingly, and announce API change to mailing lists