[HatoholArmPluginInterfaceTest] Add a new method: assertStartAndWaitConnected.

The main purpose to use this method is to avoid the problem in which
the client side tries to connect before the queue is created.

Previous code sometimes cause the following error.

  testHatoholArmPluginInterface::test_sendAndonReceived:2014-06-11 22:42:54 warning Exception received from broker: not-found: not-found: Queue not found: test-hatohol-arm-plugin-interface-S (qpid/broker/SessionAdapter.cpp:686) [caused by 2 \x08:\x01]
[ERR] <HatoholThreadBase.cc:243> Got Exception: Queue test-hatohol-arm-plugin-interface-S does not exist