Use Ember CLI production assets by defaults for new installs (#578)

Use Ember CLI production assets by defaults for new installs (#578)

diff --git a/samples/standalone.yml b/samples/standalone.yml
index 80adeaf..e13af63 100644
--- a/samples/standalone.yml
+++ b/samples/standalone.yml
@@ -40,6 +40,7 @@ env:
   LC_ALL: en_US.UTF-8
   LANG: en_US.UTF-8
   LANGUAGE: en_US.UTF-8
+  EMBER_CLI_PROD_ASSETS: 1
   # DISCOURSE_DEFAULT_LOCALE: en
 
   ## How many concurrent web requests are supported? Depends on memory and CPU cores.

GitHub sha: e73dd1e8b77d6f1f6faa199bd9bff8d2b2e57d66

This commit appears in #578 which was approved by Falco. It was merged by eviltrout.