switch over to passive stakes (#4295)

* add failing test

* switch over to passive stakes

* test multiple stakers

runtime/src/lib.rs

@@ -12,6 +12,7 @@ pub mod loader_utils;
 pub mod locked_accounts_results;
 pub mod message_processor;
 mod native_loader;
+pub mod stakes;
 mod status_cache;
 mod system_instruction_processor;