[build] template user in install/remove scripts

tasks/build/os_packages.js

@@ -31,7 +31,8 @@ module.exports = function (grunt) {
         '--after-install', resolve(packageScriptsDir, 'post_install.sh'),
         '--before-remove', resolve(packageScriptsDir, 'pre_remove.sh'),
         '--after-remove', resolve(packageScriptsDir, 'post_remove.sh'),
-        '--config-files', '/opt/kibana/config/kibana.yml'
+        '--config-files', '/opt/kibana/config/kibana.yml',
+        '--template-value', 'user=kibana'
       ];
 
       const files = buildDir + '/=/opt/kibana';

tasks/build/package_scripts/post_install.sh

@@ -10,7 +10,7 @@ user_create() {
   useradd -r "$1"
 }
 
-if ! user_check "kibana" ; then
-  user_create "kibana"
+if ! user_check "<%= user %>" ; then
+  user_create "<%= user %>"
 fi
-chown kibana /opt/kibana/optimize
+chown <%= user %> /opt/kibana/optimize

tasks/build/package_scripts/post_remove.sh

@@ -10,8 +10,8 @@ user_remove() {
 
 case $1 in
     purge|0)
-        if user_check "kibana" ; then
-          user_remove "kibana"
+        if user_check "<%= user %>"  ; then
+          user_remove "<%= user %>"
         fi
         ;;
 esac