Add end-to-end tests to verify TLS endpoints respect configured profiles.

Test file to create:

• test/e2e/tls_test.go

Test scenarios:

• Deploy Kueue with default TLS settings, verify Intermediate profile is used
• Deploy Kueue with TLS 1.3 minimum, verify TLS 1.2 connections are rejected
• Deploy Kueue with specific cipher suites, verify only those ciphers are accepted
• Test metrics endpoint TLS configuration
• Test webhook endpoint TLS configuration
• Test visibility API endpoint TLS configuration (if VisibilityOnDemand feature enabled)

Tools:

• Use openssl s_client or similar TLS scanner to verify settings
• Consider using testssl.sh or similar for comprehensive scanning

Acceptance Criteria:

• E2E tests verify TLS settings on all HTTPS endpoints
• Tests run in CI pipeline
• Tests cover default and custom TLS configurations

Depends on: OCPKUEUE-455 (unit tests)