
Split refstack-client into two subcommands: upload and test. The 'test' command will run Tempest like before, while 'upload' takes in a result file argument and will upload it to the Refstack API url. Testing with refstack-client now saves a JSON result file containing the content of what will or would be posted to the Refstack API. Change-Id: I28bcb75b51b77872f39e144ae8ffa7e64b26b233