Merge pull request #65929 from yujuhong/add-warning

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Add a README in test/e2e/node with a warning **What this PR does / why we need it**: **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes # **Special notes for your reviewer**: **Release note**: ```release-note NONE ```

Merge pull request #65929 from yujuhong/add-warning
4d987355 · Kubernetes Submit Queue · GitHub · fc09e89d · e5bd6b1e · 4d987355
Unverified Commit 4d987355 authored Jul 07, 2018 by Kubernetes Submit Queue Committed by GitHub Jul 07, 2018
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--- a/test/e2e/node/README.md
+++ b/test/e2e/node/README.md
+# WARNING: Do not add tests in this directory
+There are two types of end-to-end tests in Kubernetes:
+ * [Cluster end-to-end tests](https://git.k8s.io/community/contributors/devel/e2e-tests.md)
+ * [Node end-to-end
+   tests](https://github.com/kubernetes/community/blob/master/contributors/devel/e2e-node-tests.md)
+Tests located in `${KUBE_ROOT}/test/e2e/common` are shared by both Cluster
+and Node E2E test jobs. Tests in `${KUBE_ROOT}/test/e2e_node` are exclusively
+owned by Node E2E. *If you want to add a test, most likely than not, you want
+to add the test to one of the two directories mentioned above.* If you are
+unsure, please check with the OWNER of the directory. This directory currently
+contains misplaced and legacy tests; they will be cleaned up in the future.