[WIP] Attempt to consolidate YAML files (#8965)

This is an attempt to consolidate YAML files so that:

- They can remain untouched when we moving the documents around;
- Contributors do not have to change the test cases each time a
  documentation is moved;
- We can encourage referencing the existing YAMLs from different
  concept or task pages when possible.

test/examples_test.go

@@ -440,8 +440,10 @@ func TestExampleObjectSchemas(t *testing.T) {
 			"redis-pod":     {&api.Pod{}},
 			"redis-service": {&api.Service{}},
 		},
-		"docs/tasks/run-application": {
+		"artifacts/application": {
 			"deployment":            {&extensions.Deployment{}},
+		},
+		"docs/tasks/run-application": {
 			"deployment-patch-demo": {&extensions.Deployment{}},
 			"deployment-scale":      {&extensions.Deployment{}},
 			"deployment-update":     {&extensions.Deployment{}},