Gets cache rebalance order. Rebalance order can be set to non-zero value for caches with
CacheRebalanceMode#SYNC or
CacheRebalanceMode#ASYNC rebalance modes only.
If cache rebalance order is positive, rebalancing for this cache will be started only when rebalancing for
all caches with smaller rebalance order will be completed.
Note that cache with order
0 does not participate in ordering. This means that cache with
rebalance order
0 will never wait for any other caches. All caches with order
0 will
be rebalanced right away concurrently with each other and ordered rebalance processes.
If not set, cache order is 0, i.e. rebalancing is not ordered.