Add ability to specify availability zone for subnet during creation
add support for AWS Data Pipeline's GetPipelineDefinition endpoint

http://docs.aws.amazon.com/datapipeline/latest/APIReference/API_GetPipelineDefinition.html
add support for AWS Data Pipeline's QueryObjects endpoint

http://docs.aws.amazon.com/datapipeline/latest/APIReference/API_QueryObjects.html
add support for AWS Data Pipeline's DescribeObjects endpoint

http://docs.aws.amazon.com/datapipeline/latest/APIReference/API_DescribeObjects.html
CRUD for OpenStack heat's Stack model
Tests for previous commit
Store mock stacks in memory to make tests more realistic
Minor whitespace cleanups.
Merge pull request #2133 from dprince/orchestration_rebase

Orchestration rebase
Merge pull request #2129 from mattgillooly/add_aws_data_pipeline_get_pipeline_definition

support for additional AWS Data Pipeline API endpoints
Merge pull request #2122 from jschneiderhan/subnet-availability-zone

Add ability to specify availability zone for subnet during creation
Merge branch 'master' of https://github.com/fog/fog

* 'master' of https://github.com/fog/fog:
  Minor whitespace cleanups.
  Store mock stacks in memory to make tests more realistic
  Tests for previous commit
  CRUD for OpenStack heat's Stack model
  add support for AWS Data Pipeline's DescribeObjects endpoint
  add support for AWS Data Pipeline's QueryObjects endpoint
  add support for AWS Data Pipeline's GetPipelineDefinition endpoint
  Add ability to specify availability zone for subnet during creation