[build] Fail on errors

tasks/build/package_scripts/post_install.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 user_check() {
   getent passwd "$1" > /dev/null 2>&1

tasks/build/package_scripts/post_remove.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 user_check() {
   getent passwd "$1" > /dev/null 2>&1

tasks/build/package_scripts/pre_install.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 if command -v systemctl >/dev/null && systemctl is-active kibana.service >/dev/null; then
     systemctl --no-reload stop kibana.service

tasks/build/package_scripts/pre_remove.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 echo -n "Stopping kibana service..."
 if command -v systemctl >/dev/null && systemctl is-active kibana.service >/dev/null; then