[ggj][infra][4/5]feat: add goldens update bazel rules for Asset API (#397)

* goldens update bazel rules * clean up * goldens update rule for asset API * update goldens

Author: xiaozhenliu-gg5

test/integration/BUILD.bazel

@@ -53,6 +53,12 @@ golden_update(
  data = ["//test/integration/goldens/redis:goldens_files"],
 )
 
+golden_update(
+ name = "asset_update",
+ target = ":asset_java_gapic",
+ data = ["//test/integration/goldens/asset:goldens_files"],
+)
+
 ####################################################
 # API Library Rules
 ####################################################