go/svc: finish porting services to Bazel

The following services were never ported:
 - cmc-proxy
 - arista-proxy
 - m6220-proxy
 - topo

They now build.

Change-Id: I0688bfe43cdff946e6662e21969ef539382c0e86
diff --git a/go/svc/topo/main.go b/go/svc/topo/main.go
index 4affd57..4efe878 100644
--- a/go/svc/topo/main.go
+++ b/go/svc/topo/main.go
@@ -13,9 +13,8 @@
 	"github.com/golang/glog"
 	"github.com/golang/protobuf/proto"
 
-	pb "code.hackerspace.pl/hscloud/go/svc/topo/proto"
-
 	"code.hackerspace.pl/hscloud/go/svc/topo/graph"
+	pb "code.hackerspace.pl/hscloud/go/svc/topo/proto"
 	"code.hackerspace.pl/hscloud/go/svc/topo/state"
 )