XD-1850: IllegalStateException when deploying orphaned...

XD-1850: IllegalStateException when deploying orphaned stream
modules upon a matching container arrival

This was caused by a modification in StreamDeploymentsPath that
now requires module type, module label, and container to be
present since these three fields have been combined into a
single node (see XD-1591).
XD-1775 & XD-1781 HdfsJdbc, HdfsMongo Accept Tests

* Address comments in PR review https://github.com/spring-projects/spring-xd/pull/914/