treewide: introduce osbase package and move things around

All except localregistry moved from metropolis/pkg to osbase,
localregistry moved to metropolis/test as its only used there anyway.

Change-Id: If1a4bf377364bef0ac23169e1b90379c71b06d72
Reviewed-on: https://review.monogon.dev/c/monogon/+/3079
Tested-by: Jenkins CI
Reviewed-by: Serge Bazanski <serge@monogon.tech>
diff --git a/metropolis/node/core/mgmt/BUILD.bazel b/metropolis/node/core/mgmt/BUILD.bazel
index ecec6d1..65a54a6 100644
--- a/metropolis/node/core/mgmt/BUILD.bazel
+++ b/metropolis/node/core/mgmt/BUILD.bazel
@@ -14,11 +14,11 @@
         "//metropolis/node/core/identity",
         "//metropolis/node/core/rpc",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/logtree/proto",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
+        "//osbase/logtree",
+        "//osbase/logtree/proto",
+        "//osbase/supervisor",
         "@com_github_vishvananda_netlink//:netlink",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes",
@@ -32,10 +32,10 @@
     srcs = ["svc_logs_test.go"],
     embed = [":mgmt"],
     deps = [
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/logtree/proto",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
+        "//osbase/logtree",
+        "//osbase/logtree/proto",
         "@com_github_google_go_cmp//cmp",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//credentials/insecure",