新增spring cloud用例

spring-cloud/spring-cloud-zuul/README.md

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+APPLICATION FAILED TO START
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+Description:
+
+The bean 'counterFactory', defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulServerAutoConfiguration$ZuulCounterFactoryConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulServerAutoConfiguration$ZuulMetricsConfiguration.class] and overriding is disabled.
+
+Action:
+
+Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true