metropolis/node/core/metrics: fixup metrics authentication

Change-Id: I67643855ab61bfdea980211ffe01e50c2409882b
Reviewed-on: https://review.monogon.dev/c/monogon/+/1979
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Tested-by: Jenkins CI
diff --git a/metropolis/node/kubernetes/metricsproxy/BUILD.bazel b/metropolis/node/kubernetes/metricsproxy/BUILD.bazel
new file mode 100644
index 0000000..95f8b2c
--- /dev/null
+++ b/metropolis/node/kubernetes/metricsproxy/BUILD.bazel
@@ -0,0 +1,14 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "metricsproxy",
+    srcs = ["metricsproxy.go"],
+    importpath = "source.monogon.dev/metropolis/node/kubernetes/metricsproxy",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//metropolis/node",
+        "//metropolis/node/kubernetes/pki",
+        "//metropolis/pkg/supervisor",
+        "@io_k8s_kubernetes//cmd/kubeadm/app/constants",
+    ],
+)