Update 2.1 test templates to use the 15.7 preview 1 test SDK
Update 2.1 test templates to use the 15.7 preview 1 test SDK

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