Initialize ETCD/SQL db after SynchronizedBeforeSuite
Initialize ETCD/SQL db after SynchronizedBeforeSuite

* SynchronizedBeforeSuite only runs on 1 node

Signed-off-by: Luan Santos <509a85c757dc22c0257f4655fb3fb682d42f965b@pivotal.io>

cloudfoundry-incubator/benchmark-bbs