JCasC configmap field jcasc-default-config.yaml being written as a horrible string with literal \n instead of using |-

[HariSekhon]

Is your feature request related to a problem? Please describe

It's hard to read or edit or derive new JCasC configuration or patches

apiVersion: v1
data:
  jcasc-default-config.yaml: "jenkins:\n  authorizationStrategy:\n    loggedInUsersCanDoAnything:\n
    \     allowAnonymousRead: false\n  securityRealm:\n    local:\n      allowsSignup:
    false\n      enableCaptcha: false\n      users:\n      - id: \"${chart-admin-username}\"\n
    \       name: \"Jenkins Admin\"\n        password: \"${chart-admin-password}\"\n
    \ disableRememberMe: false\n  mode: NORMAL\n  numExecutors: 0\n  labelString:
    \"\"\n  projectNamingStrategy: \"standard\"\n  markupFormatter:\n    plainText\n
    \ clouds:\n  - kubernetes:\n      containerCapStr: \"10\"\n      defaultsProviderTemplate:
    \"\"\n      connectTimeout: \"5\"\n      readTimeout: \"15\"\n      jenkinsUrl:
    \"http://jenkins.jenkins.svc.cluster.local:8080\"\n      jenkinsTunnel: \"jenkins-agent.jenkins.svc.cluster.local:50000\"\n
    \     maxRequestsPerHostStr: \"32\"\n      retentionTimeout: \"5\"\n      waitForPodSec:
    \"600\"\n      name: \"kubernetes\"\n      namespace: \"jenkins\"\n      serverUrl:
    \"https://kubernetes.default\"\n      credentialsId: \"\"\n      podLabels:\n
    \     - key: \"jenkins/jenkins-jenkins-agent\"\n        value: \"true\"\n      templates:\n
    \       - name: \"jenkins-agent\"\n          namespace: \"jenkins\"\n          id:
    3e0449083f498efe24c7bb2de306d33a77f64bff0b8a55ca968854f37f3f7654\n          containers:\n
    \         - name: \"jnlp\"\n            alwaysPullImage: false\n            args:
    \"^${computer.jnlpmac} ^${computer.name}\"\n            command: \n            envVars:\n
    \             - envVar:\n                  key: \"JENKINS_URL\"\n                  value:
    \"http://jenkins.jenkins.svc.cluster.local:8080/\"\n            image: \"jenkins/inbound-agent:3192.v713e3b_039fb_e-5\"\n
    \           privileged: \"false\"\n            resourceLimitCpu: 512m\n            resourceLimitMemory:
    512Mi\n            resourceRequestCpu: 512m\n            resourceRequestMemory:
    512Mi\n            runAsUser: \n            runAsGroup: \n            ttyEnabled:
    false\n            workingDir: /home/jenkins/agent\n          idleMinutes: 0\n
    \         instanceCap: 2147483647\n          label: \"jenkins-jenkins-agent \"\n
    \         nodeUsageMode: \"NORMAL\"\n          podRetention: Never\n          showRawYaml:
    true\n          serviceAccount: \"jenkins-agent\"\n          slaveConnectTimeoutStr:
    \"100\"\n          yaml: |-\n            apiVersion: v1\n            kind: Pod\n
    \           metadata:\n              annotations:\n                cluster-autoscaler.kubernetes.io/safe-to-evict:
    \"false\"\n          yamlMergeStrategy: merge\n  crumbIssuer:\n    standard:\n
    \     excludeClientIPFromCrumb: true\nsecurity:\n  apiToken:\n    creationOfLegacyTokenEnabled:
    false\n    tokenGenerationOnCreationEnabled: false\n    usageStatisticsEnabled:
    true\nunclassified:\n  location:\n    adminAddress: \n    url: http://jenkins:8080"
kind: ConfigMap
metadata:
  labels:
    app.kubernetes.io/component: jenkins-controller
    app.kubernetes.io/instance: jenkins
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: jenkins
    helm.sh/chart: jenkins-4.12.1
    jenkins-jenkins-config: "true"
  name: jenkins-jenkins-jcasc-config
  namespace: jenkins

Describe the solution you'd like

Generate JCasC using yaml |- notation instead on a big ugly string

Describe alternatives you've considered

I've replaced the JCasC configmap jcasc-default-config.yaml field wholesale with a nicely written one which worked to add the NFS server per environment that I needed.

Compare this much more nice readable yaml to the above:

https://github.com/HariSekhon/Kubernetes-configs/blob/master/jenkins/overlay/jcasc-cm.patch.yaml

Additional context

No response