[KIC 2.0][feature] Add knative Ingress

[ccfishk]

What this PR does / why we need it:
what:
Using KIC 2.0 with Knative

Why:
Knative is supported in KIC 1.3.0. Need migrate it to KIC 2.0

Checklist
Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR
• Continuation Test including dbless, postgress and legacy all pass.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #1396 (7c3edf1) into next (3600658) will increase coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             next    #1396      +/-   ##
==========================================
+ Coverage   55.76%   55.87%   +0.10%     
==========================================
  Files          43       43              
  Lines        3683     3685       +2     
==========================================
+ Hits         2054     2059       +5     
+ Misses       1480     1478       -2     
+ Partials      149      148       -1     

Impacted Files	Coverage Δ
pkg/annotations/annotations.go	90.62% <ø> (ø)
pkg/store/store.go	32.11% <100.00%> (+0.41%)	⬆️
pkg/parser/parser.go	84.12% <0.00%> (+1.28%)	⬆️

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[shaneutt]

A couple small comments: I think we're going to need to pull back on the background controller loader for knative.

[shaneutt]

I added a couple follow up items, but otherwise let's get the value we have here merged in! 👍