encode empty ps.Maps as nil
encode empty ps.Maps as nil

every little helps

kinvolk/scope,weaveworks/scope,kinvolk/scope,weaveworks/scope,weaveworks/scope,weaveworks/scope,weaveworks/scope,kinvolk/scope,alban/scope,alban/scope,kinvolk/scope,kinvolk/scope,weaveworks/scope,alban/scope,kinvolk/scope,alban/scope,alban/scope,alban/scope