fix: ensure ingress HTTP rule exists to prevent analyze panic

[testA113]

Closes #653

📑 Description

The issue described gives a panic since the rule.HTTP field may not exist in an ingress object. My fix checks if the HTTP field rule.HTTP exists before looping though the rule.HTTP.Paths

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

[arbreezy]

lgtm