add csi-test to vendor

vendor/github.com/kubernetes-csi/csi-test/cmd/csi-sanity/README.md

@@ -0,0 +1,58 @@
+# Sanity Test Command Line Program
+This is the command line program that tests a CSI driver using the [`sanity`](https://github.com/kubernetes-csi/csi-test/tree/master/pkg/sanity) package test suite.
+
+Example:
+
+```
+$ csi-sanity --csi.endpoint=<your csi driver endpoint>
+```
+
+If you want to specify a mount point:
+
+```
+$ csi-sanity --csi.endpoint=<your csi driver endpoint> --csi.mountpoint=/mnt
+```
+
+For verbose type:
+
+```
+$ csi-sanity --ginkgo.v --csi.endpoint=<your csi driver endpoint>
+```
+
+For csi-credentials, create a secrets file with all the secrets in it:
+```yaml
+CreateVolumeSecret:
+  secretKey: secretval1
+DeleteVolumeSecret:
+  secretKey: secretval2
+ControllerPublishVolumeSecret:
+  secretKey: secretval3
+ControllerUnpublishVolumeSecret:
+  secretKey: secretval4
+NodeStageVolumeSecret:
+  secretKey: secretval5
+NodePublishVolumeSecret:
+  secretKey: secretval6
+```
+
+Pass the file path to csi-sanity as:
+```
+$ csi-sanity --csi.endpoint=<your csi driver endpoint> --csi.secrets=<path to secrets file>
+```
+
+Replace the keys and values of the credentials appropriately. Since the whole
+secret is passed in the request, multiple key-val pairs can be used.
+
+### Help
+The full Ginkgo and golang unit test parameters are available. Type
+
+```
+$ csi-sanity -h
+```
+
+to get more information
+
+### Download
+
+Please see the [Releases](https://github.com/kubernetes-csi/csi-test/releases) page
+to download the latest version of `csi-sanity`