Install vm payload from /sdcard to /data/data/app

Bug: 373248801
Bug: 374244795
Test: build and run
Change-Id: I96124eb14bacc03365999f8d7ee31a8ff17ceb99
diff --git a/build/debian/vm_config.json.aarch64 b/build/debian/vm_config.json.aarch64
index 2841e6d..c9a16bf 100644
--- a/build/debian/vm_config.json.aarch64
+++ b/build/debian/vm_config.json.aarch64
@@ -2,7 +2,7 @@
     "name": "debian",
     "disks": [
         {
-            "image": "$DATA_DIR/image.raw",
+            "image": "$PAYLOAD_DIR/image.raw",
             "partitions": [],
             "writable": true
         }