update BUILD files

vendor/k8s.io/kube-openapi/pkg/aggregator/BUILD

@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["aggregator.go"],
+    importpath = "k8s.io/kube-openapi/pkg/aggregator",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/go-openapi/spec:go_default_library",

vendor/k8s.io/kube-openapi/pkg/builder/BUILD

@@ -7,6 +7,7 @@ go_library(
         "openapi.go",
         "util.go",
     ],
+    importpath = "k8s.io/kube-openapi/pkg/builder",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/emicklei/go-restful:go_default_library",

vendor/k8s.io/kube-openapi/pkg/common/BUILD

@@ -6,6 +6,7 @@ go_library(
         "common.go",
         "doc.go",
     ],
+    importpath = "k8s.io/kube-openapi/pkg/common",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/emicklei/go-restful:go_default_library",

vendor/k8s.io/kube-openapi/pkg/generators/BUILD

@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["openapi.go"],
+    importpath = "k8s.io/kube-openapi/pkg/generators",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/golang/glog:go_default_library",

vendor/k8s.io/kube-openapi/pkg/handler/BUILD

@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["handler.go"],
+    importpath = "k8s.io/kube-openapi/pkg/handler",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/NYTimes/gziphandler:go_default_library",

vendor/k8s.io/kube-openapi/pkg/util/BUILD

@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["trie.go"],
+    importpath = "k8s.io/kube-openapi/pkg/util",
     visibility = ["//visibility:public"],
 )