*: git.monogon.dev -> source.monogon.dev

This implements T882, setting our (virtual) GOPATH to source.monogon.dev
for this repository.

Test Plan: Refactor, CI only.

X-Origin-Diff: phab/D686
GitOrigin-RevId: c5e2309089948ffc3a98e68e2e0e1cbb157d3a36
diff --git a/metropolis/node/kubernetes/csi.go b/metropolis/node/kubernetes/csi.go
index f1ccf8a..03091c1 100644
--- a/metropolis/node/kubernetes/csi.go
+++ b/metropolis/node/kubernetes/csi.go
@@ -32,10 +32,10 @@
 	"google.golang.org/grpc/status"
 	pluginregistration "k8s.io/kubelet/pkg/apis/pluginregistration/v1"
 
-	"git.monogon.dev/source/nexantic.git/metropolis/node/core/localstorage"
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/logtree"
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/fsquota"
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/supervisor"
+	"source.monogon.dev/metropolis/node/core/localstorage"
+	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/metropolis/pkg/fsquota"
+	"source.monogon.dev/metropolis/pkg/supervisor"
 )
 
 // Derived from K8s spec for acceptable names, but shortened to 130 characters to avoid issues with