This patch allows the `external-snapshotter-runner` ClusterRole, which
is bound to the `csi-snapshotter` Service Account, to create and manage
VolumeSnapshot objects.
This is needed during the synchronization of VolumeGroupSnapshots.
The YAML Specification requires three daashes `---` as marker for the
start of a content block. That means, each YAML file needs to start with
`---` on the first line (or after initial comments).
See-also: https://yaml.org/
