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/build/mkverity/BUILD.bazel b/metropolis/node/build/mkverity/BUILD.bazel
index caabc26..a748b86 100644
--- a/metropolis/node/build/mkverity/BUILD.bazel
+++ b/metropolis/node/build/mkverity/BUILD.bazel
@@ -15,5 +15,5 @@
     srcs = ["mkverity.go"],
     importpath = "source.monogon.dev/metropolis/node/build/mkverity",
     visibility = ["//visibility:private"],
-    deps = ["//metropolis/pkg/verity"],
+    deps = ["//osbase/verity"],
 )