Fixed AbstractSingleNodeInitializationTests
Fixed invalid map references
WIP
Fixed AbstractSingleNodeInitializationTests
WIP
Added embeddedZooKeeper.start() in setup
Modified Curator path cache listener

Modified the Curator path cache implementation to
correctly add and remove listeners for a path's
children.
Fixed ZooKeeperClientConnectionTests. Make RetryPolicy Pluggable
Fixed ZooKeeperClientConnectionTests. Make RetryPolicy Pluggable(2)
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/stream/AbstractSingleNodeStreamDeploymentIntegrationTests.java
fixed module indices and test's undeploy order
reversing order of parsed modules for StreamFactory
no longer reverse order in Stream build
avoiding test crosstalk
support named channels on both ends of a stream
ZooKeeperStreamDefinitionRepositoryTests pass; minor cleanup
parser needs StreamDefinitionRepository for taps
refactoring StreamTestSupport
ensuring the /xd/streams path exists
increased test sink polling timeouts