Update golang dependencies

vendor/k8s.io/client-go/tools/auth/BUILD

@@ -0,0 +1,23 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["clientauth.go"],
+    tags = ["automanaged"],
+    deps = ["//vendor/k8s.io/client-go/rest:go_default_library"],
+)
+
+go_test(
+    name = "go_default_xtest",
+    srcs = ["clientauth_test.go"],
+    tags = ["automanaged"],
+    deps = ["//vendor/k8s.io/client-go/tools/auth:go_default_library"],
+)