[APM Telemetry] Allow skipping creating Configmap with parameters needed for APM KPIs

[liliyadd]

What this PR does / why we need it:

Some CICD tools used by the customers always show diff for the Configmap kpi-telemetry-configmap. Adding configuration option to skip generating new install_time and install_id on DA installation/upgrade.

With default value skipKPITelemetry=false:

# Source: datadog/templates/kpi-telemetry-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: dd2-datadog-kpi-telemetry-configmap
  namespace: default
  labels:
    helm.sh/chart: 'datadog-3.57.2'
    app.kubernetes.io/name: "dd2-datadog"
    app.kubernetes.io/instance: "dd2"
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/version: "7"
data:
  install_type: k8s_manual
  install_id: "0dd5282b-b416-46c5-9794-fe9967bdae50"
  install_time: "1708450941"

With default value skipKPITelemetry=true:

---
# Source: datadog/templates/kpi-telemetry-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: dd2-datadog-kpi-telemetry-configmap
  namespace: default
  labels:
    helm.sh/chart: 'datadog-3.57.2'
    app.kubernetes.io/name: "dd2-datadog"
    app.kubernetes.io/instance: "dd2"
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/version: "7"
data:
  install_type: k8s_manual
  install_id: "default"
  install_time: "default"
---

Which issue this PR fixes

(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)

• fixes #1296

Special notes for your reviewer:

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [X] Chart Version bumped
• [X] Documentation has been updated with helm-docs (run: .github/helm-docs.sh)
• [X] CHANGELOG.md has been updated
• [ ] Variables are documented in the README.md
• [ ] For Datadog Operator chart or value changes update the test baselines (run: make update-test-baselines)

[daodennis]

Very excited about this PR, thank you @liliyadd!

[gaffneyd4]

In the meantime here's a kustomize patch that achieves the same behavior:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- template.yaml
patches:
- target:
    kind: ConfigMap
    name: datadog-kpi-telemetry-configmap
  patch: |
    - op: replace
      path: /data/install_id
      value: "00000000-0000-0000-0000-000000000000"
    - op: replace
      path: /data/install_time
      value: "0"

[liliyadd]

/merge

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