cls/rgw: bump cls_rgw_reshard_entry decode version to match encode

9302fbb bumped the version in
ENCODE_START() but missed DECODE_START(). i don't think that would cause
any decode failures, unless we later raise ENCODE_START's compat_v above
2

Signed-off-by: Casey Bodley <[email protected]>

Author: cbodley

src/cls/rgw/cls_rgw_types.h

@@ -1369,7 +1369,7 @@ struct cls_rgw_reshard_entry
   }
 
   void decode(ceph::buffer::list::const_iterator& bl) {
-    DECODE_START(2, bl);
+    DECODE_START(3, bl);
     decode(time, bl);
     decode(tenant, bl);
     decode(bucket_name, bl);