Test case that demonstrates JENA-820

Test case that demonstrates an issue with processing blank nodes in
multi-stage pipelines being subject to blank node divergence.  Test is
failing but set to ignore until the workaround suggested in JENA-820 is
implemented.
Initial workaround for JENA-820

Currently only works correctly when the output is line based, need to
add more test cases and research further into how to implement this for
block and whole file based modes.