[C++] Fixed flaky test: AuthPluginTest.testTlsDetectHttpsWithHostNameValidation (#8771)
[C++] Fixed flaky test: AuthPluginTest.testTlsDetectHttpsWithHostNameValidation (#8771)

* [C++] Fixed flaky test: AuthPluginTest.testTlsDetectHttpsWithHostNameValidation

* Fixed test assertion
merlimat/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,yahoo/pulsar,massakam/pulsar,massakam/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar