sequenceiq/cloudbreak — pull request #271 by martonsereg (2014-08-25 15:33:14+00:00)
Title: Add new nodes to an existing stack/cluster

- PUT (with positive scalingAdjustments) supported for stack and cluster resources
- flow for adding new instances to a stack and new hosts to a cluster
- AWS and Azure implementation of adding a new instance
- added a reusable PollingService to poll different resources with a timeout