osbase/logtree.LeveledLogger -> go/logging.Leveled

This factors out the common leveled logger interface out of the logtree.
We want to use the same interface outside of logtree/supervisor usage
within the resolver code, which will be exposed to clients.

Change-Id: I299e76d91e8cefddf8f36f1e58432418c4694df2
Reviewed-on: https://review.monogon.dev/c/monogon/+/3411
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
Tested-by: Jenkins CI
diff --git a/metropolis/node/kubernetes/BUILD.bazel b/metropolis/node/kubernetes/BUILD.bazel
index f1af467..d4a36dc 100644
--- a/metropolis/node/kubernetes/BUILD.bazel
+++ b/metropolis/node/kubernetes/BUILD.bazel
@@ -16,6 +16,7 @@
     importpath = "source.monogon.dev/metropolis/node/kubernetes",
     visibility = ["//metropolis/node:__subpackages__"],
     deps = [
+        "//go/logging",
         "//go/net/tinylb",
         "//metropolis/node",
         "//metropolis/node/core/clusternet",
@@ -37,7 +38,6 @@
         "//osbase/event/memory",
         "//osbase/fileargs",
         "//osbase/fsquota",
-        "//osbase/logtree",
         "//osbase/loop",
         "//osbase/net/dns/kubernetes",
         "//osbase/supervisor",