core : FullListVdsCommand log message appears wrong with java class ref

FullListVdsCommand FINISH log message has
unexpanded data and prints the class reference
instead of the data.

Change-Id: I0d6ff48e2c5a25dd659a8777b70fdcaaa9a3d840
Bug-Url: https://bugzilla.redhat.com/1054410
Signed-off-by: Ravi Nori <rnori@redhat.com>