Location regex should respect Exact paths

[dacohen]

If a location is marked as Exact, and the ingress uses regex matching, the resulting location block should respect this.

What this PR does / why we need it:

Even when an ingress has regex matching enabled, Exact paths should still be respected. Currently, they're ignored, which leads to non-intuitive behavior.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] CVE Report (Scanner found CVE and adding report)
• [x] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Documentation only

Which issue/s this PR fixes

fixes #11397

How Has This Been Tested?

A test case was added to validate that the change generates the expected location block in the resulting nginx config.

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I've read the CONTRIBUTION guide
• [x] I have added unit and/or e2e tests to cover my changes.
• [x] All new and existing tests passed.