ESSNTL-4817: rewrite filter parsing

[MichaelMraka]

Secure Coding Practices Checklist GitHub Link

• https://github.com/RedHatInsights/secure-coding-checklist

Secure Coding Checklist

• Input Validation
• Output Encoding
• Authentication and Password Management
• Session Management
• Access Control
• Cryptographic Practices
• Error Handling and Logging
• Data Protection
• Communication Security
• System Configuration
• Database Security
• File Management
• Memory Management
• General Coding Practices

[jira-linking]

Commits missing Jira IDs:
4e16789
fa8f44c
5768be1
06acc69
2c2c96f
f4a9263
8b9a49f
3bf8acb
a391615
dabc67d
77ac9e2
ecfcdc7
cb7a3b9

[codecov-commenter]

Codecov Report

Patch coverage: 94.50% and project coverage change: -0.63% ⚠️

Comparison is base (e0b99e8) 61.11% compared to head (f80b87b) 60.48%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1271      +/-   ##
==========================================
- Coverage   61.11%   60.48%   -0.63%     
==========================================
  Files         106      106              
  Lines        6687     6631      -56     
==========================================
- Hits         4087     4011      -76     
- Misses       2061     2086      +25     
+ Partials      539      534       -5     

Flag	Coverage Δ
unittests	60.48% <94.50%> (-0.63%)	⬇️

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

Files Changed	Coverage Δ
manager/controllers/baseline_systems_export.go	55.00% <ø> (ø)
manager/controllers/system_packages.go	53.73% <50.00%> (-0.96%)	⬇️
manager/controllers/baseline_systems.go	48.59% <66.66%> (-0.45%)	⬇️
manager/controllers/utils.go	79.72% <97.50%> (+2.03%)	⬆️
base/database/utils.go	7.69% <100.00%> (+1.60%)	⬆️
manager/controllers/advisories.go	67.79% <100.00%> (ø)
manager/controllers/advisories_export.go	48.97% <100.00%> (-4.09%)	⬇️
manager/controllers/advisory_systems.go	42.85% <100.00%> (ø)
manager/controllers/advisory_systems_export.go	41.86% <100.00%> (ø)
manager/controllers/baselines.go	83.78% <100.00%> (ø)
... and 10 more

... and 4 files with indirect coverage changes

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[psegedy]

some tests seem to be broken, 1 test seems to be failing due to changed openapi scheme, others might be affected by potential bug in #1264

[psegedy]

/retest

[MichaelMraka]

/retest