As long as RPC is processed, it should always return 0.  Also add lease ok/err opstats to help track future issues.
As long as RPC is processed, it should always return 0.  Also add lease
ok/err opstats to help track future issues.

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable