[release-1.17] Create a per ingress ReferenceGrant to avoid conflicts in the same namespace

[knative-prow-robot]

This is an automated cherry-pick of #829

[dprotaso]

/lgtm
/approve

[knative-prow]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.58%. Comparing base (523ecde) to head (5135022).
Report is 2 commits behind head on release-1.17.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.17     #830      +/-   ##
================================================
- Coverage         79.73%   76.58%   -3.16%     
================================================
  Files                17       17              
  Lines              1584     1580       -4     
================================================
- Hits               1263     1210      -53     
- Misses              285      336      +51     
+ Partials             36       34       -2     

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[dprotaso]

Need to cherry-pick this back - #820

(edit) PR is here: #831

[dprotaso]

/override "codecov/project"

[knative-prow]

@dprotaso: Overrode contexts on behalf of dprotaso: codecov/project

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