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/util/runners.go b/metropolis/test/util/runners.go
index bb7aa91..95de02a 100644
--- a/metropolis/test/util/runners.go
+++ b/metropolis/test/util/runners.go
@@ -9,7 +9,7 @@
 	"testing"
 	"time"
 
-	"source.monogon.dev/metropolis/test/launch"
+	"source.monogon.dev/osbase/test/launch"
 )
 
 // TestEventual creates a new subtest looping the given function until it either