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/cmc-proxy/proto/proxy.proto b/go/svc/cmc-proxy/proto/proxy.proto
new file mode 100644
index 0000000..a231693
--- /dev/null
+++ b/go/svc/cmc-proxy/proto/proxy.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+package proto;
+option go_package = "code.hackerspace.pl/hscloud/go/svc/cmc-proxy/proto";
+
+message GetKVMDataRequest {
+    int64 blade_num = 1;
+}
+
+message GetKVMDataResponse {
+    repeated string arguments = 1;
+}
+
+service CMCProxy {
+    rpc GetKVMData(GetKVMDataRequest) returns (GetKVMDataResponse);
+}