[fix] stop status updates on 404

[shaneutt]

What this PR does / why we need it:

If we're processing status updates for an object, but that object is removed from the API while we're working on it, we should stop working on it.

Which issue this PR fixes

Resolves #1619

[ccfishk]

lgtm

[codecov]

Codecov Report

Merging #1620 (f579349) into next (6042cfd) will decrease coverage by 0.26%.
The diff coverage is 12.50%.

@@            Coverage Diff             @@
##             next    #1620      +/-   ##
==========================================
- Coverage   62.56%   62.30%   -0.27%     
==========================================
  Files          82       82              
  Lines        7180     7202      +22     
==========================================
- Hits         4492     4487       -5     
- Misses       2361     2384      +23     
- Partials      327      331       +4     

Flag	Coverage Δ
integration-test	62.30% <12.50%> (-0.27%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
internal/ctrlutils/ingress-status.go	60.93% <12.50%> (-5.17%)	⬇️
internal/ctrlutils/utils.go	93.75% <0.00%> (-2.09%)	⬇️
...trollers/configuration/zz_generated_controllers.go	33.61% <0.00%> (-1.02%)	⬇️
internal/parser/parser.go	88.82% <0.00%> (+1.14%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6042cfd...f579349. Read the comment docs.