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/core/metrics/BUILD.bazel b/metropolis/node/core/metrics/BUILD.bazel
index 9169ae6..6385bb8 100644
--- a/metropolis/node/core/metrics/BUILD.bazel
+++ b/metropolis/node/core/metrics/BUILD.bazel
@@ -15,7 +15,7 @@
         "//metropolis/node/core/curator/proto/api",
         "//metropolis/node/core/curator/watcher",
         "//metropolis/node/core/identity",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
     ],
 )
 
@@ -30,9 +30,9 @@
     deps = [
         "//metropolis/node",
         "//metropolis/node/core/curator/proto/api",
-        "//metropolis/pkg/freeport",
-        "//metropolis/pkg/supervisor",
         "//metropolis/test/util",
+        "//osbase/freeport",
+        "//osbase/supervisor",
         "@com_zx2c4_golang_wireguard_wgctrl//wgtypes",
         "@io_bazel_rules_go//go/runfiles:go_default_library",
     ],
diff --git a/metropolis/node/core/metrics/discovery.go b/metropolis/node/core/metrics/discovery.go
index ff3fcf1..116291e 100644
--- a/metropolis/node/core/metrics/discovery.go
+++ b/metropolis/node/core/metrics/discovery.go
@@ -9,7 +9,7 @@
 
 	"source.monogon.dev/go/types/mapsets"
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 )
diff --git a/metropolis/node/core/metrics/exporters.go b/metropolis/node/core/metrics/exporters.go
index c14abcc..2dd2cfc 100644
--- a/metropolis/node/core/metrics/exporters.go
+++ b/metropolis/node/core/metrics/exporters.go
@@ -6,7 +6,7 @@
 	"net/http"
 
 	"source.monogon.dev/metropolis/node"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // An Exporter is a Prometheus binary running under the Metrics service which
diff --git a/metropolis/node/core/metrics/metrics.go b/metropolis/node/core/metrics/metrics.go
index bd229fa..b07a980 100644
--- a/metropolis/node/core/metrics/metrics.go
+++ b/metropolis/node/core/metrics/metrics.go
@@ -11,7 +11,7 @@
 
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Service is the Metropolis Metrics Service.
diff --git a/metropolis/node/core/metrics/metrics_test.go b/metropolis/node/core/metrics/metrics_test.go
index b0a9310..06b1d4e 100644
--- a/metropolis/node/core/metrics/metrics_test.go
+++ b/metropolis/node/core/metrics/metrics_test.go
@@ -18,9 +18,9 @@
 	apb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 
 	"source.monogon.dev/metropolis/node"
-	"source.monogon.dev/metropolis/pkg/freeport"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
+	"source.monogon.dev/osbase/freeport"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 func fakeExporter(name, value string) *Exporter {