feat(ldap) allow customization of the LB service for Azure

[dduportal]

Related to jenkins-infra/helpdesk#3683 (comment)

Checked on the production with the following values:

service:
  type: LoadBalancer
  # Public IPv4 defined as code in https://github.com/jenkins-infra/azure/blob/main/ldap.jenkins.io.tf instead of requesting a random new public IP, useful for DNS setup and changes
  azurePip:
    name: ldap-jenkins-io-ipv4
    resourceGroup: prod-public-ips
  whitelisted_sources:
# ...

result is:

ldap, ldap, Service (v1) has changed:
...
    labels:
      app.kubernetes.io/name: ldap
-     helm.sh/chart: ldap-0.2.1
+     helm.sh/chart: ldap-0.3.0
      app.kubernetes.io/instance: ldap
      app.kubernetes.io/managed-by: Helm
+   annotations:
+     service.beta.kubernetes.io/azure-pip-name: ldap-jenkins-io-ipv4
+     service.beta.kubernetes.io/azure-load-balancer-resource-group: prod-public-ips
  spec:
    type: LoadBalancer
-   loadBalancerIP: 20.7.180.148
    loadBalancerSourceRanges:
      - "20.85.71.108/32"

[smerle33]

🚀