If running in the ci then remove the existing gemset
If running in the ci then remove the existing gemset

git-svn-id: d8f3215415546ce936cf3b822120ca56e5ebeaa0@1389018 13f79535-47bb-0310-9956-ffa450edef68

stewi2/buildr,jpcaruana/buildr,apache/buildr,apache/buildr,apache/buildr,jpcaruana/buildr,apache/buildr,stewi2/buildr,stewi2/buildr,liamchristopher/buildr,jpcaruana/buildr,stewi2/buildr,jpcaruana/buildr,liamchristopher/buildr,liamchristopher/buildr,liamchristopher/buildr