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/kubernetes/provisioner.go b/metropolis/node/kubernetes/provisioner.go
index 38de7df..923302e 100644
--- a/metropolis/node/kubernetes/provisioner.go
+++ b/metropolis/node/kubernetes/provisioner.go
@@ -40,9 +40,9 @@
 	"k8s.io/client-go/util/workqueue"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/fsquota"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fsquota"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // ONCHANGE(//metropolis/node/kubernetes/reconciler:resources_csi.go): needs to