Updated version of TestPlatform to 15.5.0-preview-20170923-02
Updated version of TestPlatform to 15.5.0-preview-20170923-02

svick/cli,johnbeisner/cli,harshjain2/cli,dasMulli/cli,dasMulli/cli,ravimeda/cli,harshjain2/cli,ravimeda/cli,livarcocc/cli-1,harshjain2/cli,johnbeisner/cli,livarcocc/cli-1,dasMulli/cli,svick/cli,johnbeisner/cli,ravimeda/cli,svick/cli,livarcocc/cli-1