Update the script for nfs setup

Signed-off-by: Zhizhen Tang <zhizhen.tang@intel.com>

Author: TangZhiZhen

script/nfs_setup.sh

@@ -43,7 +43,7 @@ try_command lsb_release -si > /dev/null
 LINUX_DISTRO=`lsb_release -si`
 
 if [ "$LINUX_DISTRO" == "Ubuntu" ]; then
-    try_command apt-get install -y nfs-kernel-server openssh-server
+    DEBIAN_FRONTEND=noninteractive apt-get install -y nfs-kernel-server openssh-server
     try_command /etc/init.d/nfs-kernel-server restart
 elif [ "$LINUX_DISTRO" == "CentOS" ]; then
     try_command yum install -y rpcbind nfs-utils openssh-server