Move CSIMigration and CSIMigrationGCE to Beta in Kubernetes v1.17 (#17478)

content/en/docs/concepts/storage/volumes.md

@@ -479,14 +479,14 @@ spec:
 
 #### CSI Migration
 
-{{< feature-state for_k8s_version="v1.14" state="alpha" >}}
+{{< feature-state for_k8s_version="v1.17" state="beta" >}}
 
 The CSI Migration feature for GCE PD, when enabled, shims all plugin operations
 from the existing in-tree plugin to the `pd.csi.storage.gke.io` Container
 Storage Interface (CSI) Driver. In order to use this feature, the [GCE PD CSI
 Driver](https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver)
 must be installed on the cluster and the `CSIMigration` and `CSIMigrationGCE`
-Alpha features must be enabled.
+Beta features must be enabled.
 
 ### gitRepo (deprecated) {#gitrepo}
 

content/en/docs/reference/command-line-tools-reference/feature-gates.md

@@ -68,11 +68,13 @@ different Kubernetes components.
 | `CSIDriverRegistry` | `true` | Beta | 1.14 | |
 | `CSIInlineVolume` | `false` | Alpha | 1.15 | 1.15 |
 | `CSIInlineVolume` | `true` | Beta | 1.16 | - |
-| `CSIMigration` | `false` | Alpha | 1.14 | |
+| `CSIMigration` | `false` | Alpha | 1.14 | 1.16 |
+| `CSIMigration` | `false` | Beta | 1.17 | |
 | `CSIMigrationAWS` | `false` | Alpha | 1.14 | |
 | `CSIMigrationAzureDisk` | `false` | Alpha | 1.15 | |
 | `CSIMigrationAzureFile` | `false` | Alpha | 1.15 | |
-| `CSIMigrationGCE` | `false` | Alpha | 1.14 | |
+| `CSIMigrationGCE` | `false` | Alpha | 1.14 | 1.16 |
+| `CSIMigrationGCE` | `false` | Beta | 1.17 | |
 | `CSIMigrationOpenStack` | `false` | Alpha | 1.14 | |
 | `CSINodeInfo` | `false` | Alpha | 1.12 | 1.13 |
 | `CSINodeInfo` | `true` | Beta | 1.14 | |