centos6 scripts working on vz2 & vz3

centos6-x86_64 is known to be broken in fen-vz2.
After 'vzctl create' the server root doesn't get populated.
(server root is at /vz/root/228
Merge changes making centos 6 work in both servers

Conflicts:
	bootstrap-centos6-x86_64.sh
	bootstrap-centos6.sh
	venerable_functions.sh