Fix or remove tests: Mtls should enforce traffic permissions (E2E Universal Suite)

[bartsmykla]

These tests are currently disabled. We should check if they're still relevant. If they are, we should fix them; if not, we should remove them.

kuma/test/e2e_env/universal/mtls/mtls.go

Line 160 in 02a8b25

PDescribeTable("should enforce traffic permissions", FlakeAttempts(3),

Skipped test cases

kuma/test/e2e_env/universal/mtls/mtls.go

Line 195 in 02a8b25

Entry("builtin CA", fmt.Sprintf(`

kuma/test/e2e_env/universal/mtls/mtls.go

Line 205 in 02a8b25

Entry("Provided CA with Root CA", fmt.Sprintf(`

kuma/test/e2e_env/universal/mtls/mtls.go

Line 219 in 02a8b25

Entry("Provided CA with Intermediate CA", fmt.Sprintf(`