Use noninteractive frontend for Debian upgrade

When upgrading packages for Debian based make
sure we set the frontend to noninteractive so
we dont get stopped on questions popping up.

Change-Id: I2dfa77840401261e4c58095b978e1f6374ed69a1

run_tests.sh

@@ -209,7 +209,7 @@ if [ "${MANAGE_REPOS}" = true ]; then
         $SUDO $YUM update -y
         update_ret=$?
     elif uses_debs; then
-        $SUDO apt-get upgrade -y
+        $SUDO DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confnew" upgrade
         update_ret=$?
     fi
     if [ $update_ret -ne 0 ]; then