feat: cleaner monitoring

Testing/Review:

• Enable monitoring (should only require monitoring.enabled now) and deploy successfully
• Check prometheus targets and ensure all 4 anchore targets show up and show as up
• Attempt to hit https://anchore-api.bigbang.dev/metrics and make sure you are denied (should be 403)

Explanation of changes:

• Change chart to make monitoring toggle on smoothly with the one value
• Modify VirtualService to deny access to metrics from outside
• Bump chart, update docs