OSDOCS-2450: Add vSphere to CSI auto migration

Author: Lisa Pettyjohn

modules/persistent-storage-csi-migration-enable.adoc

@@ -32,7 +32,7 @@ spec:
   featureSet: TechPreviewNoUpgrade <1>
 ...
 ----
-<1> Enables automatic migration for AWS EBS, Cinder, Azure Disk, and Azure File.
+<1> Enables automatic migration for AWS EBS, Cinder, GCP, Azure Disk, Azure File, and VMware vSphere.
 +
 You can specify CSI automatic migration for a selected CSI driver by setting `CustomNoUpgrade` `featureSet` and for `featuregates` to one of the following:
 +
@@ -46,6 +46,8 @@ You can specify CSI automatic migration for a selected CSI driver by setting `Cu
 * CSIMigrationAzureFile
 
 * CSIMigrationGCE
+
+* CSIMigrationvSphere
 --
 +
 The following configuration example enables automatic migration to the AWS EBS CSI driver only:

modules/persistent-storage-csi-migration-overview.adoc

@@ -20,6 +20,8 @@ The following drivers are supported:
 
 * Google Compute Engine Persistent Disk (in-tree) and Google Cloud Platform Persistent Disk (CSI)
 
+* VMware vSphere
+
 CSI automatic migration should be seamless. Enabling this feature does not change how you use all existing API objects (for example, `PersistentVolumes`, `PersistentVolumeClaims`, and `StorageClasses`).
 
 By default, automatic migration is disabled.