This is the last PR for moving the YAML/JSON sample files. There still
need some follow up PRs to:
- rename the `codenew` shortcode to `code`.
- move the examples_test.go to where it really belongs.
* Consolidate YAML files [part-12]
Relocate YAML files referenced by the accessing application topic
and the rest of cluster administration.
* Adjust json shortcodes.
poothia
Qiming