Don't force one-to-ones on the child side to be loaded eagerly

Hibernate should be able to tell that it already has the object
loaded (the parent).  I'm not sure why this doesn't apply
when we run the query.
bumping candlepin-deps version
Add jackson-datatype-hibernate4 to dependencies.
Merge pull request #622 from candlepin/ckozak/loop_joins

Don't force one-to-ones on the child side to be loaded eagerly