[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

@@ -39,6 +39,12 @@ golden_update(
     target = ":asset_java_gapic",
 )
 
+golden_update(
+    name = "asset_update",
+    target = ":asset_java_gapic",
+    data = ["//test/integration/goldens/asset:goldens_files"],
+)
+
 ####################################################
 # API Library Rules
 ####################################################
@@ -100,3 +106,4 @@ java_gapic_library(
         "@com_google_googleapis//google/logging/v2:logging_java_proto",
     ],
 )
+