[TT-12317][PoC] allow validating CA during mTLS

[jeffy-mathew]

Description

Related Issue

Motivation and Context

How This Has Been Tested

Screenshots (if appropriate)

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Refactoring or add test (improvements in base code or adds test coverage to functionality)

Checklist

• [ ] I ensured that the documentation is up to date
• [ ] I explained why this PR updates go.mod in detail with reasoning why it's required
• [ ] I would like a code coverage CI quality gate exception and have explained why

[github-actions[bot]]

API Changes

--- prev.txt	2024-07-09 13:06:10.588182998 +0000
+++ current.txt	2024-07-09 13:06:07.356154491 +0000
@@ -8027,6 +8027,7 @@
 
 type CertificateCheckMW struct {
 	*BaseMiddleware
+	// Has unexported fields.
 }
     CertificateCheckMW is used if domain was not detected or multiple APIs bind
     on the same domain. In this case authentification check happens not on TLS

[sonarqubecloud[bot]]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[sonarqubecloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
93.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[jeffy-mathew]

feature implemented in https://github.com/TykTechnologies/tyk/pull/6405