Reproducer for HHH-19855 <convert> at entity level is ignored in orm.xml

[yrodiere]

https://hibernate.atlassian.net/browse/HHH-19855

Running this will result in SimpleXmlOverriddenTest#testDefinitionAtEntityLevel failing with:

Expecting value of type [org.hibernate.type.internal.BasicTypeImpl], but found [BasicType adapter for AttributeConverter<java.lang.String,java.lang.String>]
java.lang.AssertionError: Expecting value of type [org.hibernate.type.internal.BasicTypeImpl], but found [BasicType adapter for AttributeConverter<java.lang.String,java.lang.String>]
	at org.junit.Assert.fail(Assert.java:89)
	at org.hibernate.testing.junit4.ExtraAssertions.assertTyping(ExtraAssertions.java:36)
	at org.hibernate.orm.test.mapping.converted.converter.SimpleXmlOverriddenTest.testDefinitionAtEntityLevel(SimpleXmlOverriddenTest.java:122)