raw-delta: Add chunk-size and seek fields

Signed-off-by: Jonathas-Conceicao <jonathas.conceicao@ossystems.com.br>

Author: Jonathas-Conceicao

pkgschema/schemas/raw-delta-object.json

@@ -24,6 +24,12 @@
         "target": {
             "$ref": "definitions.json#/target"
         },
+        "chunk-size": {
+            "$ref": "definitions.json#/chunk-size"
+        },
+        "seek": {
+            "$ref": "definitions.json#/seek"
+        },
         "size": {
             "$ref": "definitions.json#/size"
         }