Add failing test for add nested in an open search
Add failing test for add nested in an open search

This is because Net::LDAP::Connection#add calls read without queueing,
meaning it can read the wrong message off the socket.

javanthropus/ruby-net-ldap,astockwell/ruby-net-ldap,bkeepers/ruby-net-ldap,cloudvolumes/ruby-net-ldap,javanthropus/ruby-net-ldap,cloudvolumes/ruby-net-ldap,astockwell/ruby-net-ldap,bkeepers/ruby-net-ldap