Support test reporters for CI

[BryanCrotaz]

Accept a cmd line argument to specify a reporter and pass this argument to ember test in each scenario.

Ensure that ember test adds to the report instead of overwriting it.

Alternatively report in the specified format instead of printing the result to the console.

[kategengler]

You can already pass any arguments to the command that is run:
See: https://github.com/ember-cli/ember-try#ember-tryone-scenario-options-----command-default-ember-test

[BryanCrotaz]

Clarifying - add CMD line arguments to try:each

[kategengler]

Thank you for clarifying.

For now, you could specify the command, with arguments, in the config: https://github.com/ember-cli/ember-try#configuration-files