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/launch/cli/launch-cluster/BUILD.bazel b/metropolis/test/launch/cli/launch-cluster/BUILD.bazel
index 688228e..9e48795 100644
--- a/metropolis/test/launch/cli/launch-cluster/BUILD.bazel
+++ b/metropolis/test/launch/cli/launch-cluster/BUILD.bazel
@@ -8,7 +8,7 @@
     visibility = ["//visibility:private"],
     deps = [
         "//metropolis/cli/metroctl/core",
-        "//metropolis/test/launch/cluster",
+        "//metropolis/test/launch",
     ],
 )