Add vcert playbook examples for TLSPC, TLSDC, and CFPOC

[sabixx]

Summary

• Add 32 playbook examples covering a wide range of deployment scenarios: IIS, RDP, NGINX, Jenkins, HAProxy, HTTPD, Tomcat, WinRM HTTPS, and Kubernetes pod deployments
• Examples span TLSPC (Venafi as a Service), TLSDC (TPP), and CyberArk/Firefly POC platforms
• All credentials use environment variable templating ({{ Env "..." }}) — no hardcoded secrets

Playbook categories

• TLSPC: IIS, RDP, NGINX, HAProxy, HTTPD, Tomcat, Jenkins, WinRM HTTPS (incl. oAuth), Kubernetes pods, workshop labs
• TLSDC: IIS (PEM, P12, no-install), RDP, NGINX
• CFPOC: NGINX, HTTPD, HAProxy, Tomcat (JKS + P12)

Test plan

• Verify playbook YAML syntax is valid
• Confirm no hardcoded credentials in any files
• Test representative playbooks against TLSPC and TLSDC environments

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