Proxy configuration is not applied before SAML setup -- breaks deployment

[rajali]

Describe the bug

• proxy configuration does not get applied before SAML plugin tries to connect to external IDP url.
• I have to comment out SAML configuration to let proxy applied then re-apply the config update for SAML to work
• this is not an issue when the instance is always running, it becomes an issue when the Kubernetes cluster nodes scale-down and scale-up (which is done daily).

Version of Helm and Kubernetes

- Helm: v3.15.1
- Kubernetes: 1.28.10

Chart version

5.1.4

What happened?

1.On fresh install of helm chart with the above proxy and saml configuration, the deployment fails as the Idp url is not accessible.
2.When SAML config is commented the deployment completes and proxy configured.
3.On update of chart with SAML config uncommented the SSO starts working.
4.The issue triggers again, when the K8s cluster nodes go through a scale down/up cycle.
...

What you expected to happen?

• I want the configuration to persist
• where proxy is always setup first before any external connectivity is performed

How to reproduce it

controller:
  initContainerEnv:
    - name: http_proxy
      value: "http://192.168.64.1:3128"
    - name: https_proxy
      value: "http://192.168.64.1:3128"
    - name: no_proxy
      value: ""
    - name: JAVA_OPTS
      value: "-Dhttps.proxyHost=proxy_host_name_without_protocol -Dhttps.proxyPort=3128 - Dhttp.noProxyHosts=''"
  containerEnv:
    - name: http_proxy
      value: "http://192.168.64.1:3128"
    - name: https_proxy
      value: "http://192.168.64.1:3128"

  JCasC:
    configScripts:
      jenkins-casc: |-
        jenkins:
          globalNodeProperties:
            - envVars:
                env:
                  - key: "PROXY_HOST"
                    value: ${proxy_host}
                  - key: "PROXY_PORT"
                    value: ${proxy_port}
          proxy:
            name: ${proxy_host}
            noProxyHost: ${no_proxy}
            port: ${port}
            testUrl: "https://google.com"

    securityRealm: |-
      saml:
        idpMetadataConfiguration:
          period: 10
          url: ${idpMetadataUrl}
       # rest of the saml config here

### Anything else we need to know?

_No response_