setup-yum-repo: Add prod flag for doing IUS install on CentOS.

scripts/lib/setup-yum-repo

@@ -2,12 +2,28 @@
 set -x
 set -e
 
+is_prod=false
+args="$(getopt -o '' --long prod -- "$@")"
+eval "set -- $args"
+while true; do
+    case "$1" in
+        --prod) is_prod=true; shift;;
+        --) shift; break;;
+    esac
+done
+
 is_centos=false
 is_rhel=false
 is_rhel_registered=false
 if [ -e /etc/centos-release ]; then
     is_centos=true
     yum install -y epel-release
+
+    if [ "$is_prod" = true ]; then
+        # IUS is needed for installing python36u-mod_wsgi on prod env
+        yum localinstall -y https://centos7.iuscommunity.org/ius-release.rpm
+    fi
+
 elif grep -q "Red Hat" /etc/redhat-release; then
     is_rhel=true
     yum localinstall -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
@@ -18,6 +34,7 @@ elif grep -q "Red Hat" /etc/redhat-release; then
         subscription-manager repos --enable "rhel-*-optional-rpms" --enable "rhel-*-extras-rpms"
     fi
 fi
+
 yum update -y
 
 # "Development Tools" is the equivalent of build-essential