Update volume snapshot CRDs to v1 version

- bump controller-gen 0.4.0 version
- update CRDs to use `apiextensions.k8s.io/v1` apis

Signed-off-by: prateekpandey14 <prateekpandey14@gmail.com>

client/hack/README.md

@@ -56,7 +56,8 @@ For example, the following command will add a metadata section for a nested obje
 +        metadata:
 +          description: 'Standard object''s metadata. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata'
 ```
-* Update the restoreSize property to string in snapshot.storage.k8s.io_volumesnapshots.yaml  
+
+* Update the restoreSize property to string in snapshot.storage.k8s.io_volumesnapshots.yaml
 
 The generated yaml file contains restoreSize property anyOf as described below: 
  

client/hack/update-crd.sh

@@ -28,7 +28,7 @@ then
   TMP_DIR=$(mktemp -d);
   cd $TMP_DIR;
   go mod init tmp;
-  go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.3.0;
+  go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.4.0;
   rm -rf $TMP_DIR;
   CONTROLLER_GEN=$(which controller-gen)
 fi
@@ -39,7 +39,7 @@ then
   exit 1;
 fi
 
-$CONTROLLER_GEN crd:trivialVersions=true,preserveUnknownFields=false paths=${SCRIPT_ROOT}/apis/volumesnapshot/v1beta1
+$CONTROLLER_GEN crd:crdVersions=v1,trivialVersions=true paths=${SCRIPT_ROOT}/apis/volumesnapshot/v1beta1
 
 # To use your own boilerplate text use:
 #   --go-header-file ${SCRIPT_ROOT}/hack/custom-boilerplate.go.txt