* The relevant partition information is now stored in
the fields instead of the general information for all wikis.
* Also improved hash ring caching and made getCoalesceLocationInternal()
more robust.
* Improved availability of sibling queue methods.
Change-Id: I7ac268bb1db4615e0f735576c506593d5688e17e
* This lets queues be horizontally partitioned onto
different servers, with weights assigned to each.
The queue classes used by the different partitions
can be hetereogenous or homogeneous.
* How partitioning is done is setup similar to LBFactory,
where wikis belong to sections and sections have config.
Change-Id: I44d59b67cf417dca28a3e9b25371dac5a7ffcb47
