*: 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/controller-manager.go b/metropolis/node/kubernetes/controller-manager.go
index 107b98e..c54112c 100644
--- a/metropolis/node/kubernetes/controller-manager.go
+++ b/metropolis/node/kubernetes/controller-manager.go
@@ -23,9 +23,9 @@
 	"net"
 	"os/exec"
 
-	"git.monogon.dev/source/nexantic.git/metropolis/node/kubernetes/pki"
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/fileargs"
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/supervisor"
+	"source.monogon.dev/metropolis/node/kubernetes/pki"
+	"source.monogon.dev/metropolis/pkg/fileargs"
+	"source.monogon.dev/metropolis/pkg/supervisor"
 )
 
 type controllerManagerConfig struct {