vdsm-hook-extra-ipv4-addrs hook

Admin guide of RHEV 4.0 mentions vdsm-hook-extra-ipv4-addrs hook for assigning multiple IP addressess to a host network.
How can I achieve the same in RHEV 4.1?
I tried "yum install vdsm-hook-extra-ipv4-addrs" yum cannot find the package.
Thanks