Revert all security patches

[vvalderrv]

No description provided.

[Copilot]

Pull Request Overview

This PR removes all security configurations and patches from the Jenkins infrastructure, including authentication mechanisms, authorization controls, network policies, and security-related plugins. The changes revert from SAML-based authentication to basic local authentication and remove various security hardening measures.

• Removes SAML authentication configuration and emergency admin accounts
• Removes matrix-auth plugin and network security policies
• Reverts Docker image security improvements to less secure package installation methods

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
staging/values.yaml	Removes SAML config, admin password setup, and emergency admin email
production/values.yaml	Removes emergency admin email configuration
dev/values.yaml	Removes emergency admin email configuration
build/plugins.txt	Removes matrix-auth security plugin
build/Dockerfile	Reverts security-hardened package installations to less secure methods
base/jenkins/values.yaml	Replaces secure configuration with basic local auth setup
base/jenkins/templates/networkpolicies.yaml	Completely removes all network security policies
base/jenkins/templates/jcasc-configmap.yaml	Removes security-related ConfigMap label
base/jenkins/jcasc_yamls/02-security.yaml	Replaces SAML auth with basic local authentication
base/jenkins/jcasc_yamls/02-security-emergency.yaml	Removes emergency authentication fallback

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