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/cloud/agent/BUILD.bazel b/cloud/agent/BUILD.bazel
index 6f5ce82..e228ca4 100644
--- a/cloud/agent/BUILD.bazel
+++ b/cloud/agent/BUILD.bazel
@@ -19,16 +19,16 @@
         "//metropolis/node/build/mkimage/osimage",
         "//metropolis/node/core/devmgr",
         "//metropolis/node/core/network",
-        "//metropolis/pkg/blockdev",
-        "//metropolis/pkg/bootparam",
-        "//metropolis/pkg/efivarfs",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/nvme",
-        "//metropolis/pkg/pki",
-        "//metropolis/pkg/scsi",
-        "//metropolis/pkg/smbios",
-        "//metropolis/pkg/supervisor",
         "//net/proto",
+        "//osbase/blockdev",
+        "//osbase/bootparam",
+        "//osbase/efivarfs",
+        "//osbase/logtree",
+        "//osbase/nvme",
+        "//osbase/pki",
+        "//osbase/scsi",
+        "//osbase/smbios",
+        "//osbase/supervisor",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_mdlayher_ethtool//:ethtool",
         "@com_github_vishvananda_netlink//:netlink",