install bundler for ruby 2000. Refs #CORE-574.
bugfix. Refs #CORE-574.
Merge pull request #4 from sbosx/CORE-574

install bundler for ruby 200. Refs #CORE-574.
Merge branch 'development' of github.com:centralway/core-jenkins-slaves into development
 added numbrs-sandbox, corrected node names in core, added autocreation of paritions