Update repo metadata (heroku#84)

Signed-off-by: Pablo Temporini <ptemporini@salesforce.com>

Author: pablotemporini

.github/CODEOWNERS

@@ -1,6 +1,8 @@
 # Note: Delete this file if you are copying the code in this repository into your own project.
 
 # Default to requesting pull request reviews from the Heroku Languages team.
+#ECCN:Open Source
+#GUSINFO:Languages,Heroku PHP Platform
 * @heroku/languages
 
 # However, request review from the Heroku language owner for files that are updated