[2.x] Extracts demo configuration setup into a java tool, adds support for Bundled JDK for this tool and updates DEVELOPER_GUIDE.md#3845

Merged

cwperks merged 8 commits intoopensearch-project:2.xfrom DarshitChanpura:backport-demo-config-changes

Dec 18, 2023

+2,375-990

Commits on Dec 14, 2023

Refactor plugin install workflow to be inline with 2.x
DarshitChanpura
committed

Commits on Dec 15, 2023

Removes support for txt file for specifying initial admin password and prevents password from being printed in the logs (opensearch-project#3850 )
DarshitChanpura
committed
Updates developer guide and removes integtest.sh (opensearch-project#3844 )
DarshitChanpura
committed