Fix eth0 upon cloning in VirtualBox

Thanks to: http://superuser.com/questions/332593/how-do-you-automatically-detect-a-new-network-card-in-centos-6-redhat

#vi  fixeth0.sh
if grep -q eth1 /etc/udev/rules.d/70-persistent-net.rules; then sed -i '/eth0/d' /etc/udev/rules.d/70-persistent-net.rules; sed -i 's/eth1/eth0/g' /etc/udev/rules.d/70-persistent-net.rules; ETHERNET=`grep eth0 /etc/udev/rules.d/70-persistent-net.rules | awk -F"," '{print $4}' | awk -F"\"" '{print $2}'`; echo Ethernet Addr: $ETHERNET; sed -i 's/HWADDR=".*"/HWADDR="'$ETHERNET'"/' /etc/sysconfig/network-scripts/ifcfg-eth0; /sbin/start_udev /sbin/service network restart; fi