fix defect #4327 [dev] copycds should use ppc64le instead of ppc64el in ubuntu ppc64le
Merge branch 'master' of ssh://git.code.sf.net/p/xcat/xcat-core
remove xcat-buildkit,xCAT-buildkit is here
use ppc64el now for ubuntu package use ppc64el
use Utils instead of BuildkitUtils.pm
add osarch comments for Ubuntu Power LE