Users should be able to grow or shrink their EC2 clusters with just the click of a button from the server editor page in Eclipse. We already have a lot of the code that checks if we need to start up new instances, so it'd mostly consist of:
- adding the UI controls for changing the cluster size in the WTP server editor view
- adding code for shrinking clusters if we have too many instances running
- adding code for adding/removing the load balancer host if the cluster goes from 1 node to multiple nodes, and vice versa.
Until this feature is added, users can work around this by creating a new cluster with the new number of hosts they want, launch that new cluster, then shut down the old cluster once the new one is up and running.
