Migrate cv-demo labs to open source

[dhalperi]

Problem

The cv_demo_base_panos lab references a private cv-demo repository that open source users cannot access, limiting the usefulness of this lab snapshot.

Proposal

Migrate the full cv-demo laboratory collection from the private repository to the open source lab-validation framework.

Scope

The cv-demo appears to contain comprehensive network validation scenarios that would be valuable for the open source community. This migration would involve:

• Copying lab configurations and show command outputs
• Ensuring compatibility with open source lab validation framework
• Following the same private→public migration process for any internal references
• Testing integration with existing lab framework

Current State

• cv_demo_base_panos lab exists as a "smaller version" but references inaccessible private repository
• Link provides no value to open source users

Benefits

• Expands available lab scenarios for open source validation
• Provides more comprehensive testing examples
• Removes broken references to private repositories

This issue tracks the full migration effort separate from immediate cleanup of broken links in existing labs.