Fixed up the GemFireDataSourceUsingNonSpringConfiguredGemFireServerIntegrationTest to customize the classpath in order to exlude the Spring Data GemFire dependency from the non-Spring-configured GemFire Server's classpath thereby removing any presence of the ListRegionsOnServerFunction GemFire Function; made use of the com.gemstone.gemfire.distributed.ServerLauncher class for launching the non-Spring-configured GemFire Server and finally, wrote the gemfire-datasource-integration-test-cache.xml as an cache.xml file to the non-Spring-configured GemFire Server's working directory to properly configure the GemFire Server.
(cherry picked from commit 65ab1c7dcd)
Signed-off-by: John Blum <jblum@pivotal.io>