Indicate 2.16 stream in project creation

Author: gsmet

_versions/2.16/guides/_attributes-local.adoc

@@ -4,4 +4,6 @@
 :code-examples: {generated-dir}/examples
 :imagesdir: ./images
 :includes: ./_includes
+:create-app-stream: 2.16
+:create-cli-stream: {create-app-stream}
 // end::xref-attributes[]