server should be RsOther if hidden

Saghm Rossi · Saghm Rossi · commit 3083ad8392be · 2016-08-10T17:11:57.000-04:00
diff --git a/src/topology/server.rs b/src/topology/server.rs
@@ -157,7 +157,7 @@ impl ServerDescription {
             ServerType::Mongos
         } else if ismaster.is_master && !set_name_empty {
             ServerType::RSPrimary
-        } else if ismaster.is_secondary && !set_name_empty {
+        } else if ismaster.is_secondary && !set_name_empty && !ismaster.hidden {
             ServerType::RSSecondary
         } else if ismaster.arbiter_only && !set_name_empty {
             ServerType::RSArbiter
