Use simpler way to set model name
Use simpler way to set model name

The method signature for ActiveModel::Name.new changed between
version 3.0.9 and 3.1.0. Because of that, this test was failing for
ActiveModel < 3.1.0.

AaronLasseigne/active_interaction,JasOXIII/active_interaction,frbl/active_interaction,antoinefinkelstein/active_interaction,frbl/active_interaction,JasOXIII/active_interaction,antoinefinkelstein/active_interaction,orgsync/active_interaction,AaronLasseigne/active_interaction,orgsync/active_interaction