As system, the REST API should be able to filter Test Runs of a Test by Test Environment

The REST API should provide and optional parameter testEnvironments that may be used to filter out the test runs of a given test in the following endpoint.

 GET /rest/raven/1.0/api/test/{key}/testruns

Multiple environments may be specified by using the comma delimiter (e.g. "iOS,Android")
Test runs will be returned if either of the specified Test Environments matches the one associated with the Test run.