Add || true so that user script never fails (#1489)

Author: KevinFairise2

components/os/scripts/apt-disable-unattended-upgrades.sh

@@ -27,4 +27,4 @@ done
 # Kill any unattended-upgrades processes that didn't terminate
 pgrep unattended-upgrades | xargs -r -n 1 -t kill -KILL || true
 
-apt-get -y purge unattended-upgrades
+apt-get -y purge unattended-upgrades || true