Do not require aggregator url for test config
Do not require aggregator url for test config

Signed-off-by: Joseph Palermo <e623ceb69d4eba908c7aa121d8a6c4c407e290f1@pivotal.io>

cloudfoundry-incubator/cf-mysql-acceptance-tests,cloudfoundry-incubator/cf-mysql-acceptance-tests,cloudfoundry-incubator/cf-mysql-acceptance-tests,cloudfoundry-incubator/cf-mysql-acceptance-tests