BREAKING CHANGE: resolve gRPC API proxy targets (machines) on server instead of client, needs upgrade to v0.20 (#247)

Co-authored-by: Pasha Sviderski <me@psviderski.name>

pkg/api/service.go

@@ -515,8 +515,9 @@ type Service struct {
 }
 
 type MachineServiceContainer struct {
-	MachineID string
-	Container ServiceContainer
+	MachineID   string
+	MachineName string
+	Container   ServiceContainer
 }
 
 // FindContainer returns the service container by exact name, ID, or unique ID prefix.