fs/zfs/zfs: Mark vdev_zaps_v2 and head_errlog as supported

We don't need any actual adjustments as we don't use the affected structures.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/fs/zfs/zfs.c

@@ -291,6 +291,8 @@ static const char *spa_feature_names[] = {
   "com.delphix:embedded_data",
   "com.delphix:extensible_dataset",
   "org.open-zfs:large_blocks",
+  "com.klarasystems:vdev_zaps_v2",
+  "com.delphix:head_errlog",
   NULL
 };