Change attribute from String to Class

This is required by spring-projects/spring-framework@a6ff95a

Author: spencergibb

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignClientsRegistrar.java

@@ -248,7 +248,8 @@ private void eagerlyRegisterFeignClientBeanDefinition(String className, Map<Stri
 		// code
 		definition.addPropertyValue("qualifiers", qualifiers);
 		AbstractBeanDefinition beanDefinition = definition.getBeanDefinition();
-		beanDefinition.setAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE, className);
+		Class<?> type = ClassUtils.resolveClassName(className, null);
+		beanDefinition.setAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE, type);
 		// has a default, won't be null
 		boolean primary = (Boolean) attributes.get("primary");
 		beanDefinition.setPrimary(primary);