Add AppProtectVersion to Telemetry

[AlexFenlon]

Proposed changes

This collects the AppProtect Version located in the /opt/app_protect/RELEASE file and adds it to telemetry as shown below.

snippet of the log for when AppProtect is enabled:
IngressAnnotations:[appprotect.f5.com/app-protect-security-log-enable appprotect.f5.com/app-protect-enable appprotect.f5.com/app-protect-policy appprotect.f5.com/app-protect-security-log appprotect.f5.com/app-protect-security-log-destination] AppProtectVersion:4.8.1}}

kubectl describe pods my-release-nginx-ingress-controller-79c4fcbd8f-hnfqh
Name:             my-release-nginx-ingress-controller-79c4fcbd8f-hnfqh
Namespace:        default
Priority:         0
Service Account:  my-release-nginx-ingress
Node:             minikube/192.168.49.2
Start Time:       Wed, 15 May 2024 16:14:02 +0100
Labels:           app.kubernetes.io/instance=my-release
                  app.kubernetes.io/name=nginx-ingress
                  app.kubernetes.io/version=3.6.0-SNAPSHOT
                  app.nginx.org/version=1.25.3-nginx-plus-r31-p1
                  appprotect.f5.com/version=4.8.1
                  pod-template-hash=79c4fcbd8f

snippet of the log for when AppProtect is not enabled:
IngressAnnotations:[] AppProtectVersion:}}

Resolves: #5417

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

[vepatel]

@AlexFenlon Can you please also add the pod labels in the output and the annotation above is from AppProtect DoS not AppProtect WAF, those ones look like appprotect.f5.com/app-protect-enable: "True"
eg:

> k describe pod
Name:             test-release-nginx-ingress-controller-xxxxx
Namespace:        default
Priority:         0
Service Account:  test-release-nginx-ingress
Node:             venktesh-test-default-pool-d644f3ac
Start Time:       Wed, 15 May 2024 14:30:02 +0100
Labels:           app.kubernetes.io/instance=test-release
                  app.kubernetes.io/name=nginx-ingress
                  app.kubernetes.io/version=3.6.0
                  app.nginx.org/version=1.26.0
                  pod-template-hash=8677c6b859

[ADubhlaoich]

LGTM docs-wise bar one minimal correction.