feat: Configure default prometheus port in kube vip

[koseb9]

Description

Explicitly configure the default port for Prometheus to deploy Podmonitor and monitor metrics.

Example:

apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  name: kube-vip
  namespace: kube-system
  labels:
    app.kubernetes.io/name: kube-vip-podmonitor
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: kube-vip-ds
  podMetricsEndpoints:
    - port: metrics

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Small minor change not affecting the Ansible Role code (Github Actions Workflow, Documentation etc.)

How Has This Been Tested?

We have implemented the modified Kubevip DaemonSet and Podmonitor, and verified the Prometheus targets.

[MonolithProjects]

LGTM