Enable conversion webhook on CRDs

This patch configures the conversion strategy on the
VolumeGroupSnapshot, VolumeGroupSnapshotContent and
VolumeGroupSnapshotClass CRDs.

Since v1beta2 is marked as the stored version, client using v1beta1 will
now require the conversion webhook to operate propertly.

Author: leonardoce

client/config/crd/groupsnapshot.storage.k8s.io_volumegroupsnapshotclasses.yaml

@@ -17,6 +17,15 @@ spec:
     - vgsclasses
     singular: volumegroupsnapshotclass
   scope: Cluster
+  conversion:
+    strategy: Webhook
+    webhook:
+      conversionReviewVersions: ["v1","v1beta1"]
+      clientConfig:
+        service:
+          namespace: default
+          name: snapshot-webhook-service
+          path: /convert
   versions:
   - additionalPrinterColumns:
     - jsonPath: .driver

client/config/crd/groupsnapshot.storage.k8s.io_volumegroupsnapshotcontents.yaml

@@ -17,6 +17,15 @@ spec:
     - vgscs
     singular: volumegroupsnapshotcontent
   scope: Cluster
+  conversion:
+    strategy: Webhook
+    webhook:
+      conversionReviewVersions: ["v1","v1beta1"]
+      clientConfig:
+        service:
+          namespace: default
+          name: snapshot-webhook-service
+          path: /convert
   versions:
   - additionalPrinterColumns:
     - description: Indicates if all the individual snapshots in the group are ready

client/config/crd/groupsnapshot.storage.k8s.io_volumegroupsnapshots.yaml

@@ -16,6 +16,15 @@ spec:
     - vgs
     singular: volumegroupsnapshot
   scope: Namespaced
+  conversion:
+    strategy: Webhook
+    webhook:
+      conversionReviewVersions: ["v1","v1beta1"]
+      clientConfig:
+        service:
+          namespace: default
+          name: snapshot-webhook-service
+          path: /convert
   versions:
   - additionalPrinterColumns:
     - description: Indicates if all the individual snapshots in the group are ready