test_apt trigger warning not fail

tests/test_apt.sh

@@ -18,7 +18,7 @@ while fuser /var/lib/dpkg/lock >/dev/null 2>&1 ; do
     if (( $lock_counter > $lock_timeout )); then
         echo "APT is reported as locked for more than $lock_timeout seconds now..."
         echo "Either a big upgrade is running or it is hung, please take a look"
-        exit 1
+        exit 3
     fi
 done
 set -e
@@ -41,7 +41,7 @@ if [ ! -f /etc/apt/apt.conf.d/20auto-upgrades ]; then
     if [ ! -f /etc/apt/apt.conf.d/50unattended-upgrades ]; then
         echo "Automatic security updates not enabled."
         echo "Perhaps the unattended-upgrades package is not installed."
-        exit 1
+        exit 3
     fi
 fi
 echo "Automatic security updates enabled."