Add PartiallyInvalid HTTPRoute Condition

[bjee19]

Proposed changes

Replace previously used TODO Conditions with PartiallyInvalid HTTPRoute Condition.

Problem: There was no HTTPRoute Condition that conveyed when a Route was PartiallyInvalid.

Solution: Added the PartiallyInvalid HTTPRoute Condition.

Testing: Manually deployed HTTPRoute with invalid and valid rules and checked to see if the HTTPRoute correctly displayed the new condition. Also checked to see if the matches are valid, with an invalid filter, that the HTTPRoute correctly displayed the new condition. Added additional Unit Tests.

Please focus on (optional): Did I update all the documentation? Are the tests that I added all necessary and done correctly?

Closes #485

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

[bjee19]

Since we are using our own version of PartiallyInvalid (copied from Gateway sig), should I open up a ticket which is for switching to their definition when they release it in 1.0?

[pleshakov]

good stuff!
please see a few change requests.
naming suggestions aim to bring consistency with the existing code. for cases, when there is a valid rule(s) but some are invalid, we can use "dropped" in the name of variables and cases in tests.

[pleshakov]

👍