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/test/lacp/BUILD.bazel b/metropolis/test/lacp/BUILD.bazel
index d044de2..b5a0f7a 100644
--- a/metropolis/test/lacp/BUILD.bazel
+++ b/metropolis/test/lacp/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_test")
-load("//metropolis/test/ktest:ktest.bzl", "ktest")
+load("//osbase/test/ktest:ktest.bzl", "ktest")
 
 go_test(
     name = "lacptest_test",