Add Installation Flags to Telemetry

[AlexFenlon]

Proposed changes

This adds a list of the arguments/flags set in the deployment to Telemetry.

I have added go tests to test this functionality as well as done several manual tests to verify this change:
I created a deployment using manifests and deployed this file:

kubectl apply -f deployments/deployment/nginx-ingress.yaml -n nginx-ingress

the changes I made to the deployment are below:

      ...
      containers:
      - image: nginx-ingress:local
        imagePullPolicy: IfNotPresent
        name: nginx-ingress
        ports:
        ...
        args:
          - -nginx-configmaps=$(POD_NAMESPACE)/nginx-config
          - -v=3 # Enables extensive logging. Useful for troubleshooting.
          - include-year
          - version
          - enable-snippets
         ...

the snippet of the telemetry log for this deployment is :

InstallationFlags:[-nginx-configmaps=nginx-ingress/nginx-config -v=3 include-year version enable-snippets]}}

Changing around these flags shows that this the deployment args look like:

      ...
      containers:
      - image: nginx-ingress:local
        imagePullPolicy: IfNotPresent
        name: nginx-ingress
        ports:
        ...
        args:
          -  -v=3 # Enables extensive logging. Useful for troubleshooting.
          - version
          - -nginx-configmaps=$(POD_NAMESPACE)/nginx-config
         ...

the snippet of the telemetry log for this deployment is :

 InstallationFlags:[-v=3 version -nginx-configmaps=nginx-ingress/nginx-config]}}

example using nginx-plus installing using helm:

helm install my-release ./charts/nginx-ingress \
    --set controller.nginxplus=true \
    --set controller.image.tag=local \
    --set controller.logLevel=3 \
    --set controller.image.repository=nginx/nginx-ingress \
    --set controller.enableSnippets=true 

the snippet of the telemetry log of a nginx plus deployment using helm:

IsPlus:true InstallationFlags:[-nginx-plus=true -nginx-reload-timeout=60000 -enable-app-protect=false -enable-app-protect-dos=false -nginx-configmaps=default/my-release-nginx-ingress -ingress-class=nginx -health-status=false -health-status-uri=/nginx-health -nginx-debug=false -v=3 -nginx-status=true -nginx-status-port=8080 -nginx-status-allow-cidrs=127.0.0.1 -report-ingress-status -external-service=my-release-nginx-ingress-controller -enable-leader-election=true -leader-election-lock-name=nginx-ingress-leader -enable-prometheus-metrics=true -prometheus-metrics-listen-port=9113 -prometheus-tls-secret= -enable-service-insight=false -service-insight-listen-port=9114 -service-insight-tls-secret= -enable-custom-resources=true -enable-snippets=true -include-year=false -disable-ipv6=false -enable-tls-passthrough=false -enable-cert-manager=false -enable-oidc=false -enable-external-dns=false -default-http-listener-port=80 -default-https-listener-port=443 -ready-status=true -ready-status-port=8081 -enable-latency-metrics=false -ssl-dynamic-reload=true -enable-telemetry-reporting=true -weight-changes-dynamic-reload=false]}}

Resolves: #5416

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[ADubhlaoich]

LGTM docs-wise

[ADubhlaoich]

LGTM docs-wise.

[jjngx]

🚀

[shaun-nx]

Nice job Alex 😄