Bump net-ldap gem to 0.16.0
Changes: https://github.com/ruby-ldap/ruby-net-ldap/blob/master/History.rdoc
This release contains a potential customer fix for https://github.com/ruby-ldap/ruby-net-ldap/issues/266
Changes: https://github.com/ruby-ldap/ruby-net-ldap/blob/master/History.rdoc
This release contains a potential customer fix for https://github.com/ruby-ldap/ruby-net-ldap/issues/266