Added averaging sensors to the couchbase cluster
Automatically rebalance when node is added
Fixed sensor ClassCastExceptions
Merge pull request #1481 from Nakomis/couchbase-averaging-sensors

Added averaging sensors to the couchbase cluster
Merge pull request #1483 from Nakomis/couchbase-auto-rebalance

Couchbase auto rebalance
Server pool entity
Adds MachineEntity class for use in server pools
Server pool tests use EmptySoftwareProcesses as the pool member spec
Update MachineEntity with attributes class from Docker
Addresses server pool review comments
Server pool machine license header and indentation