Merge pull request #3036 from edx/benp/packer-worker-build-reduce-flakiness

Use a different smoke test, since xmodule js is flaky. TNL-4492.

playbooks/roles/test_build_server/files/test-development-environment.sh

@@ -38,7 +38,7 @@ case "$1" in
     "js")
 
         # Run some of the javascript unit tests
-        paver test_js_run -s xmodule
+        paver test_js_run -s lms-coffee
         ;;
 
     "bokchoy")