Helm: Add chart icon and readme (+ other fixes) (#4014)

* Fix for local user update profile

* Helm Chart: Improvements

* Backend test fix

* Don't need to create custom db like this

* Clean ups

* Working version resets db passwords

* Update CI pipelines for postflight and init job changes

* Fix helm unit tests

* Move a few more values to secrets. Tidy ups

* Fix issues due to broken tidy ups

* Add Helm chart icon and readme

* Tweaks to readme and the customization script invocation

* Further improvements and fixes

* Remove unused files

* Removew whitespace

* CI pipeline updates for V3

* Fixes and extra helm chart unit tests

* Remove .orig files when building Helm chart