[stable/prometheus-operator] Updated to allow Ingress Capture Groups

[arthurvanduynhoven]

What this PR does / why we need it:

With the latest nginx-ingress controller we now need to specify capture groups in our ingress rules. The Prometheus-Operator ingress rules do not allow this. This change allows the user to specify ingress rules separate from the routePrefix value.

Which issue this PR fixes

N/A

Special notes for your reviewer:

@gianrubio @vsliouniaev I also fixed some minor docs

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• DCO signed
• Chart Version bumped
• Variables are documented in the README.md

[k8s-ci-robot]

Hi @arthurvanduynhoven. Thanks for your PR.

I'm waiting for a helm member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[arthurvanduynhoven]

/assign @gianrubio

[vsliouniaev]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: arthurvanduynhoven, vsliouniaev

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[Starefossen]

Why was this released as a patch version bump and not a feature version bump for the chart version?