Self-signed certs updates as old certs were expired

[sdutta9]

Proposed changes

As part of this PR, I am updating the old self-signed certs with new ones that are valid for 5 years.

Related Bug: #6433

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

[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
_{Posted by the CLA Assistant Lite bot.}

[danielnginx]

I have hereby read the F5 CLA and agree to its terms

[AlexFenlon]

Hi @sdutta9,

We appreciate your work on this but we are going to do a different approach.

We will give you credit for your contribution on our release notes once that becomes available in v4.0.0.

I hope you are happy about this.

[sdutta9]

Hi @sdutta9,

We appreciate your work on this but we are going to do a different approach.

We will give you credit for your contribution on our release notes once that becomes available in v4.0.0.

I hope you are happy about this.

Hi @AlexFenlon

I care the least about credits as long as the expired certificates are fixed. To me updating certificates is a simple task, and being part of F5 which is a security-first company, I don't feel comfortable sharing an example with expired certificates (even if they are self-signed and only used as a sample example) with customers. I will surely be happy the sooner you fix all expired certs in the main branch. 🙂