copy crowbar.yml section centos-6.4 to centos-6.5
add centos-6.5 to the bc-template-provisioner.json
Add special option for yum due to bug in CentOS repo
Merge pull request #262 from MirantisDellCrowbar/feature/DCB-218/hydrogen/master

Feature: Add support CentOS 6.5 [9/13]
Merge pull request #300 from MirantisDellCrowbar/bug/DCB-265/hydrogen

improve deployment considering the new dependency of syslinux RPM package onCentOS