test: update java tests

Add additional packages to be installed
for the java tests. This is required
  due to recent changes to teuthology.

Signed-off-by: Joe Buck <jbbuck@gmail.com>
Reviewed-by: Sam Lang <sam.lang@inktank.com>
test: add hadoop-internal test

Add a test for our branch of the Hadoop code.

Signed-off-by: Joe Buck <jbbuck@gmail.com>
Reviewed-by:  Sam Lang <sam.lang@inktank.com>