Merge
The merge action merges the content of one bucket into the active flow. This allows you to get the content from several buckets into one pipeline.
Example usage:
  - merge: temp-bucket
Usage case example:
In the following example, all xml files are transformed to json and placed in a staging bucket. After that the json files are collected from source, and then the staging bucket files are merged with those
get all xml files:
  - files: //*/*.xml 
  - transform: json
  - target: staging
get all json files:
  - files: //*/*.json
  - merge: staging
  - move: /package/  
