Include missing unit test

[Boomatang]

The controllers directory was not included in the make test-unit, this PR fixes that and the broken unit tests.

Verification

• all tests should pass.
• the fixed tests should be included in the the test run. Check this by running make test-unit | grep QueryParamMatchRegularExpression

[codecov]

Codecov Report

Merging #344 (53faaa3) into main (b736a7b) will decrease coverage by 0.11%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #344      +/-   ##
==========================================
- Coverage   65.18%   65.07%   -0.11%     
==========================================
  Files          35       35              
  Lines        3800     3800              
==========================================
- Hits         2477     2473       -4     
- Misses       1128     1131       +3     
- Partials      195      196       +1     

Flag	Coverage Δ
integration	70.08% <ø> (-0.20%)	⬇️
unit	59.40% <ø> (ø)

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

Components	Coverage Δ
api/v1beta1 (u)	∅ <ø> (∅)
pkg/common (u)	76.92% <ø> (ø)
pkg/istio (u)	30.24% <ø> (ø)
pkg/log (u)	31.81% <ø> (ø)
pkg/reconcilers (u)	33.33% <ø> (ø)
pkg/rlptools (u)	56.46% <ø> (ø)
controllers (i)	70.08% <ø> (-0.20%)	⬇️

see 5 files with indirect coverage changes

[Boomatang]

@guicassolato It would be good to get you to confirm the fixes to the PatternExpression in the unit tests is correct. Some . have being replaced by | and I am not sure if this is the correct behaviour.