Since #7908, discovery fails to import facts with the following error:

undefined local variable or method `normalize_addresses' for #<Host::Discovered:0x000000102dbdc8> (NameError)
/usr/local/rvm/gems/ruby-1.9.3-p392@test_plugin_pull_request-3/gems/activemodel-3.2.20/lib/active_model/attribute_methods.rb:407:in `method_missing'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_plugin_pull_request-3/gems/activerecord-3.2.20/lib/active_record/attribute_methods.rb:149:in `method_missing'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/foreman/app/models/host/base.rb:85:in `populate_fields_from_facts'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/plugin/app/models/host/discovered.rb:81:in `populate_fields_from_facts'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/foreman/app/models/host/base.rb:61:in `import_facts'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/plugin/app/models/host/discovered.rb:71:in `import_facts'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/plugin/app/models/host/discovered.rb:63:in `import_host_and_facts'
/var/lib/workspace/workspace/test_plugin_pull_request/database/mysql/ruby/1.9.3/plugin/test/unit/host_discovered_test.rb:19:in `block in <class:HostDiscoveredTest>'

http://ci.theforeman.org/job/test_plugin_pull_request/172/database=mysql,ruby=1.9.3/testReport/junit/%28root%29/HostDiscoveredTest/test_0002_should_import_facts_from_yaml_as_Host__Discovered/

I'm logging this under core, as I don't think Host::Base should be calling a method that's only defined on Host::Managed. It should probably be moved up a level.