Fix failing unit test
Fix failing unit test

* Server start args change after removing clusterer

[#144932309]

Signed-off-by: Denise Yu <d2c4da7d6ea264fda124d8d8d8780e90b8d0b85a@pivotal.io>

pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release