Test | SqlConnectionReliabilityTests are flaky

[mdaigle]

The tests in SqlConnectionReliabilityTest try to assert that an AggregateException is thrown when opening a connection with retry configured. Certain classes of errors are not eligible for retry and so slip through to the test cases without getting wrapped in an AggregateException. These tests need to be reworked to be more reliable. For now, disable them so that the pipeline passes consistently.