Issue #242 Add cri-o, buildah and podman packages

Author: praveenkumar

centos-7.template

@@ -22,6 +22,7 @@ repo --name=updates --baseurl=http://mirror.centos.org/centos/7/updates/x86_64/
 repo --name=extras --baseurl=http://mirror.centos.org/centos/7/extras/x86_64/
 repo --name=atomic --baseurl=http://mirror.centos.org/centos/7/atomic/x86_64/adb/
 repo --name=hvkvp --baseurl=https://copr-be.cloud.fedoraproject.org/results/gbraad/go-hvkvp/epel-7-x86_64/
+repo --name=virtsig --baseurl=https://cbs.centos.org/repos/virt7-container-common-candidate/x86_64/os/
 
 shutdown
 
@@ -50,6 +51,9 @@ go-hvkvp
 python-setuptools
 dnsmasq
 python-rhsm-certificates
+cri-o
+podman
+buildah
 
 #Packages to be removed
 -aic94xx-firmware