Add a dummy jiri_snapshot.xml

Change-Id: I2e38b8c400f9e103b6f16ad24747bea24af20149
diff --git a/bazel_rules_fuchsia/fuchsia/private/fuchsia_product_release.bzl b/bazel_rules_fuchsia/fuchsia/private/fuchsia_product_release.bzl
index f004bae..c565d6e 100644
--- a/bazel_rules_fuchsia/fuchsia/private/fuchsia_product_release.bzl
+++ b/bazel_rules_fuchsia/fuchsia/private/fuchsia_product_release.bzl
@@ -89,6 +89,11 @@
     ctx.actions.write(tool_path_json_file, "[]")
     out_files += [tool_path_json_file]
 
+    # Generate the dummy jiri_snapshot.xml
+    jiri_snapshot_xml_file = ctx.actions.declare_file(ctx.label.name + "/namespace/jiri_snapshot.xml")
+    ctx.actions.write(jiri_snapshot_xml_file, "")
+    out_files += [jiri_snapshot_xml_file]
+
     # Generate the targets.json file and the targets/ directory
     targets_json_file = ctx.actions.declare_file(ctx.label.name + "/namespace/packages/repository/targets.json")