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/go/net/tinylb/tinylb_test.go b/go/net/tinylb/tinylb_test.go
index 322be69..5b7fb16 100644
--- a/go/net/tinylb/tinylb_test.go
+++ b/go/net/tinylb/tinylb_test.go
@@ -9,8 +9,8 @@
 	"testing"
 	"time"
 
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 func TestLoadbalancer(t *testing.T) {