Krasimir Angelov authored Jan 28, 2020 and Alessio Caiazza committed Jan 28, 2020

This adds support for specifying rollout strategy via the following
attributes:
  * percentage - integer value that specifies how many % of requests
should be enabled
  * stickiness - if not specified guarantees stickiness for the provided
actor. If set to "random" no stickiness is guaranteed.