*: 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/test/e2e/main_test.go b/metropolis/test/e2e/main_test.go
index 75b96b7..71713cc 100644
--- a/metropolis/test/e2e/main_test.go
+++ b/metropolis/test/e2e/main_test.go
@@ -35,9 +35,9 @@
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	podv1 "k8s.io/kubernetes/pkg/api/v1/pod"
 
-	common "git.monogon.dev/source/nexantic.git/metropolis/node"
-	apb "git.monogon.dev/source/nexantic.git/metropolis/proto/api"
-	"git.monogon.dev/source/nexantic.git/metropolis/test/launch"
+	common "source.monogon.dev/metropolis/node"
+	apb "source.monogon.dev/metropolis/proto/api"
+	"source.monogon.dev/metropolis/test/launch"
 )
 
 const (