rebase: update kubernetes to v1.20.0

updated kubernetes packages to latest
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/kubernetes/pkg/proxy/util/BUILD

@@ -0,0 +1,58 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "endpoints.go",
+        "network.go",
+        "port.go",
+        "utils.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/proxy/util",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//pkg/apis/core/v1/helper:go_default_library",
+        "//pkg/util/sysctl:go_default_library",
+        "//staging/src/k8s.io/api/core/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/util/rand:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
+        "//staging/src/k8s.io/client-go/tools/record:go_default_library",
+        "//vendor/k8s.io/klog/v2:go_default_library",
+        "//vendor/k8s.io/utils/net:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "endpoints_test.go",
+        "port_test.go",
+        "utils_test.go",
+    ],
+    embed = [":go_default_library"],
+    deps = [
+        "//pkg/proxy/util/testing:go_default_library",
+        "//staging/src/k8s.io/api/core/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//pkg/proxy/util/iptables:all-srcs",
+        "//pkg/proxy/util/testing:all-srcs",
+    ],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)