Update gce-pd csi migration test plan

Author: mattcary

keps/sig-storage/1488-csi-migration-gce-pd/README.md

@@ -6,6 +6,12 @@
 - [Summary](#summary)
   - [New Feature Gates](#new-feature-gates)
 - [Production Readiness Review Questionnaire](#production-readiness-review-questionnaire)
+- [Design Details](#design-details)
+  - [Test Plan](#test-plan)
+      - [Prerequisite testing updates](#prerequisite-testing-updates)
+      - [Unit tests](#unit-tests)
+      - [Integration tests](#integration-tests)
+      - [e2e tests](#e2e-tests)
 - [Implementation History](#implementation-history)
 <!-- /toc -->
 
@@ -40,6 +46,40 @@ used as as described in its parent KEP. For all other contents, please refer to
 
 Please refer to the [CSI Migration Production Readiness Review Questionnaire](https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/625-csi-migration#production-readiness-review-questionnaire).
 
+## Design Details
+
+### Test Plan
+
+[X] I/we understand the owners of the involved components may require updates to
+existing tests to make this code solid enough prior to committing the changes necessary
+to implement this enhancement.
+
+##### Prerequisite testing updates
+
+No additional tests are needed, rather the issue is orchestrating CSI driver
+deployment for prow jobs. This has been complicated by the cloud provider
+extraction work, which no longer permits cloud provider specific orchestration
+in the k/k repository. This means that it is not possible to run any test for
+gce-pd in k/k. All such tests have been moved to the [cloud-provider-gcp repo and
+test infrastructure](https://github.com/kubernetes/cloud-provider-gcp).
+
+##### Unit tests
+
+See tests in [`k8s.io/csi-translation-lib/plugins/gce_pd_test`](https://github.com/kubernetes/csi-translation-lib/blob/master/plugins/gce_pd_test.go).
+
+##### Integration tests
+
+N/A
+
+##### e2e tests
+
+Support for tests after gce-pd migration have been [added to
+cloud-provider-gcp](https://github.com/kubernetes/cloud-provider-gcp/pull/265). These
+tests [have been removed from the k/k test
+jobs](https://github.com/kubernetes/test-infra/pulls?q=is%3Apr+author%3Aleiyiz+gcepd).
+
+The e2e tests are now covered in [cloud-provider-gcp](https://testgrid.k8s.io/provider-gcp-presubmits#cloud-provider-gcp-e2e-full&include-filter-by-regex=gcepd).
+
 ## Implementation History
 
 Major milestones in the life cycle of a KEP should be tracked in `Implementation History`.

keps/sig-storage/1488-csi-migration-gce-pd/kep.yaml

@@ -18,8 +18,6 @@ disable-supported: true
 status: implementable
 see-also:
   - "https://github.com/kubernetes/community/blob/master/contributors/design-proposals/storage/csi-migration.md"
-prr-approvers:
-  - "@wojtek-t"
 replaces:
 
 # The target maturity stage in the current dev cycle for this KEP.
@@ -53,4 +51,4 @@ feature-gates:
 # The following PRR answers are required at beta release
 metrics:
   - csi_sidecar_duration_operation
-  - storage_operation_duration_seconds
+  - storage_operation_duration_seconds