Improving DRY principle support on Jenkins Controller Ingress host name

[Ceddaerrix]

What does this PR do?

Improving DRY principle support on Jenkins Controller Ingress host name

• Fixes #

Submitter checklist

• Introducing TPL function on variables related to hostname in ./charts/jenkins/templates/jenkins-controller-ingress.yaml

Special notes for your reviewer

The change is intending to support the following syntax in a values.yaml such as:

global:
  jenkinsHostname: "jenkins.my-org.com"

controller:
  ingress:
    enabled: true
    hostName: "{{ .Values.global.jenkinsHostname }}"
    resourceRootUrl: "{{ .Values.global.jenkinsHostname }}"
    tls:
      - hosts:
        - "{{ .Values.global.jenkinsHostname }}"

[timja]

can you take a look at the build failure please?

[Ceddaerrix]

can you take a look at the build failure please?

Failure fixed: it was missing a chart version increment

[timja]

changelog too

[Ceddaerrix]

changelog too

Done with version increment to 4.6.4