Fix flaky invalid RLP/AP tests

[guicassolato]

Avoid using shared Gateway object (istio-ingressgateway) in the tests.

[codecov]

Codecov Report

Merging #558 (52f7bad) into main (ece13e8) will increase coverage by 0.78%.
Report is 43 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #558      +/-   ##
==========================================
+ Coverage   80.20%   80.99%   +0.78%     
==========================================
  Files          64       72       +8     
  Lines        4492     5099     +607     
==========================================
+ Hits         3603     4130     +527     
- Misses        600      654      +54     
- Partials      289      315      +26     

Flag	Coverage Δ
integration	72.25% <ø> (+0.96%)	⬆️
unit	32.74% <ø> (+2.71%)	⬆️

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

Components	Coverage Δ
api/v1beta1 (u)	71.42% <ø> (ø)
api/v1beta2 (u)	89.10% <100.00%> (-2.33%)	⬇️
pkg/common (u)	83.01% <ø> (-5.81%)	⬇️
pkg/istio (u)	75.14% <100.00%> (+1.23%)	⬆️
pkg/log (u)	94.73% <ø> (ø)
pkg/reconcilers (u)	∅ <ø> (∅)
pkg/rlptools (u)	79.84% <ø> (+0.39%)	⬆️
controllers (i)	77.75% <82.18%> (+0.95%)	⬆️

see 16 files with indirect coverage changes

[maleck13]

/lgtm