Package is not checking for already existing installs (#7555)

* rename var

* Single-line installer is not looking for already exsisting installs
Fixes #6891

* move update script up

* fix check

* small syntax fix

* fix missing var assigment

* fix assigment

* better message

* log found settingsmore logging

* also check for 'null'

* fix name confusion

contrib/packager.io/postinstall.sh

@@ -35,6 +35,14 @@ detect_initcmd
 detect_ip
 detect_python
 
+# Check if we are updating and need to alert
+echo "# Checking if update checks are needed"
+if [ -z "$2" ]; then
+  echo "# Normal install - no need for checks"
+else
+  update_checks $2
+fi
+
 # create processes
 create_initscripts
 create_admin